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Wednesday, September 17, 2008

So what is this Vaporizer thing??? A complete overview http://www.rxdirect2u.com

HOME



 



So what is this
VAPORIZER
thing and why is it so good. Here is a WIKI article on
VAPORISERS, their uses, the history as
well as some scientific facts around the Beneficial aspects of
VAPORIZERS over traditional smoking


 


A vaporizer (or vaporiser) is a device used to release the
active ingredients of plant material, commonly
cannabis,
tobacco, and many other
therapeutic or medicinal herbs or blends (phyto-inhalation; see also:
aromatherapy).
Vaporization is an
alternative to
smoking
. Rather than burning the herb, which produces numerous harmful
by-products, a vaporizer heats the material in a controlled manner so that the
active compounds contained in the plant boil off into a
vapor. This new gas is
not smoke from combustion, but an evaporated vapor that has the appearance of
light smoke. The vapor ideally contains virtually zero particulate matter (tar)
and reduced noxious gases such as carbon monoxide.
Vapor may be filtered and cooled
further using a water pipe or an inline water/ice attachment. The
vapor is then inhaled directly through
a hose or pipe for highest activity, or stored for subsequent inhalations in a
container such as a "dome" or "balloon." With little to no smoke produced,
cooler temperatures, and less material required to achieve the same effect, the
irritating/harmful effects of smoking are greatly reduced or eliminated, along
with second hand smoke, by using a
vaporizer
. This makes vaporizers
useful in places where there are public bans on smoking and in circumstances
whereas a more medical-like delivery medium is preferred.


Medical implications



The shortcomings of smoking as a delivery medium for cannabis have been
widely viewed as a major obstacle for the approval of
medical marijuana.
In response, several scientific studies have tried to
establish whether vaporizers could offer
a clinically reliable and safe method of
cannabis
use. Though vaporizers
show great variations of performance, model to model, such studies have
consistently found  superior to smoking. When using high-end
vaporizers along with high grade
cannabis (containing elevated levels of
THC),
all undesired compounds are found to be eliminated, in a manner consistent
enough for clinical trials. In comparison to other
THC delivery methods such as ingestion,
vaporization offers the advantages of:
rapid onset, direct delivery into the bloodstream (via the lungs), and the
possibility of gradually increasing delivery until the desired level is reached,
enabling more effective self-dosage.


Types





Electric wood box vaporizer



Electric wood box
vaporizer




Vaporizers are available in many
varieties and price ranges.


Simple vaporizers commonly use a jet
flame lighter
as a heat source. Although common lighters can also be used, jet flame or torch
lighters are preferred, because they don't stain the vaporizer pipes with soot.


Precise vaporizers use an electric
heating element, often featuring a temperature control and thermo-couple for
accurate thermal exchange. High-end models may cost several hundred U.S.
dollars.


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Broadly, vaporizers may be
classified by how they heat the substance:



In conduction heating, the substance is placed on a metal plate that
is then heated to release the active constituents. Conduction
vaporizers were the first type to
appear on the market, and some are still made today. The direct contact between
hot metal and the herbs can cause them to burn; thus this is not a preferred
approach and is rarely used in modern
vaporizer
designs. This design also relies on a collection dome in most
cases and the prolonged exposure of the vapor to air during the collection phase
and prior to the inhalation phase is known to decrease bio-activity via
oxidation.


In convection heating, the substance itself never touches a heating
element. Instead, hot air passes through it, heating it rapidly, and allowing
the release of the active constituents. This method of heating releases more
active constituents than conduction heating, especially if the extraction
chamber utilizes

Venturi effect
design such as seen in proprietary
vaporization chamber bowls.



  • Many convection vaporizers use a
    tube (called a "whip") that is held to the heat source, through which the user
    inhales the vapors. Some vaporizers
    have a bag or balloon attachment; vapor
    is blown into the bag, and the user detaches the bag and inhales the contents.
    Certain add-ons allow the users to cool the vapor with water.

  • Convection vaporizers are either
    forced air types which actively blow air through the heating element and
    herbs, or passive types, where the user inhales the air without help of a fan
    or pump. Most vaporizers today use
    the convection principle, including heat guns, "wood box" types, and nearly
    every high end
    vaporizer on the market today.


In radiation heating, the substance is subjected to bright light. The
substance absorbs radiant energy and its temperature rises. Radiation
vaporizers are rare but capable of
duplicating the performance of convection
vaporizers
.





A conduction-style vaporizer from the 1990s



A conduction-style vaporizer from the 1990s




 


Vapor
quality


Few vaporizer studies/reviews have
really addressed the quality of the vapor extracted and delivered. Most
studies/reviews have tended to focus on the mode of usage of the
vaporizers and not the quality of the
vapor extracted and delivered. When one considers that the active compounds in
Cannabis number at least 60-70 in
quantity and that the aromatic terpinoids
begin to vaporize at 260 °F, but the
more bio-active
CBD,
CBN, and
THC does not
vaporize until 370-392 °F, then it
becomes apparent that the only way to get a full spectrum
vapor inhalation is to extract and
deliver rapidly from a small sample at a time. Because most commercial
vaporizers are slow in extraction and
delivery, the vapor inhaled is first
aromatic, but only minimally active; and then as the apparent temperature rises,
the vapor becomes increasingly
bio-active, but minimally aromatic as
most of the aromatics already released. Only rapid extraction and delivery
approaches such as the sequential Venturi
vaporization
chamber bowls with a hot air gun or heat wand enable inhalation
of fuller spectrum vapor. By utilizing a sequential

Venturi effect
, the actual level of condensation of the vapor can be greatly
improved over hoses or balloon capture approaches because the vapor extracted
and delivered is more condensed, without needing higher temperatures that tend
to lead to hybrid smoke/vapor.


Most vaporizers deliver dry vapor:
that is vapor that is extracted and delivered dry. Usually a cooling of the
vapor takes place between the point of
extraction and the point of delivery, but the dry warm nature of this kind of
vapor will often irritate the throat and upper tracheo bronchial tree. It must
be remembered that at least in terms of
Cannabis
, heat is the primary culprit leading to damage of the tracheo-bronchial
tree whether smoking or vaporizing.
Cannabis smoke contains tars and
noxious gases known to be harmful not present in accurately extracted vapor;
however, THC is a powerful

expectorant
and will cause the tars consumed to be subsequently coughed up
(unlike
nicotine
which does not have a medicinal expectorant quality).
Vaporizers or
vaporization systems that feature rapid
extraction and delivery combined with water / ice cooling and conditioning of
the vapor deliver the best of all: cleaner more concentrated and aromatic
inhalations of vapor that is cooled and moisturized for maximized bio-activity
and minimized impact.


 


Health and
medical use





Cannabis female flowers closeup with trichomes (white).  These plant parts contain the highest concentration of medicinal compounds. After vaporization, the trichomes are flattened, having released their contents as vapor.



Cannabis female flowers
closeup with

trichomes
(white). These plant parts contain the highest concentration
of medicinal compounds. After vaporization, the trichomes are flattened,
having released their contents as vapor.




Regardless of the benefits of
medical cannabis,
the widely perceived health risks of smoking as a route of administration have
been viewed as a major obstacle for the legal approval of cannabis for medical
uses, though some studies indicate that the expectorant activity of
THC may help the lungs remove much of
the inhaled tar through coughing. In response to the concerns, several studies
have aimed to establish whether or not vaporizers could offer a clinically
reliable and safe route of administration for
cannabis. Though
vaporizers show great variations in
performance, such studies have consistently found
vaporization superior to smoking and
with best case (high-end vaporizers used
with potent cannabis) results showing an
elimination of undesired compounds suitable for clinical trials. In comparison
to other routes of administering cannabis such as eating,
vaporization offers the advantages of
inhalation - immediate delivery into the bloodstream, rapid onset of effect, and
more precise titration,
the ability to more accurately control the dosage to produce a desired effect.


 


Scientific studies


All Studies have found the release of harmful constituents dramatically
reduced or completely eliminated. Substantial reductions were also found for the
M1-volatizer. However, a 1996 study including two simple
vaporizers still found ten times more
tar in the vapor than THC, although this
was nevertheless up to a 30% improvement compared to the best alternative
smoking method.


The most recent study, published in the Journal of Psychopharmacology in May
2008, investigated the acceptability and usefulness of intrapulmonary THC
administration using a
RXDIRECT2U Vaporizer
and pure THC
instead of cannabis. Rising doses of THC (2, 4, 6 and 8 mg) were administered
with 90 minutes intervals to twelve healthy males. Very low between-subject
variability was observed in THC plasma concentrations, characterising the
RXDIRECT2U
Vaporizer
as a suitable method for the administration of THC.


In 2007, a study by

University of California, San Francisco
published in the Official Journal of
the American Academy of Neurology
examined the effectiveness of a vaporizer
that heats cannabis to a temperature
between 180°C (356°F) and 200°C (392°F) degrees and found:










Using

CO
as an indicator, there was virtually no exposure to harmful
combustion products using the vaporizing device. Since it replicates
smoking's efficiency at producing the desired
THC effect using smaller amounts of
the active ingredient as opposed to pill forms, this device has great
potential for improving the therapeutic utility of
THC.


In 2006, a study performed by researchers tested a
RXDIRECT  Vaporize
r with preparations of pure THC and found that:










Our results show that a safe and effective

cannabinoid
delivery system seems to be available to patients. The final
pulmonal uptake of THC is comparable to the smoking of cannabis, while
avoiding the respiratory disadvantages of smoking.


When using plant material (crude flower tops), besides
THC, several other
cannabinoids as well as a range of other
plant components including
terpenoids
were detected in the plant material. However, using pure THC in the
RXDIRECT Vaporizer, no degradation
products (delta-8-THC
(D8-THC), cannabinol
(CBN), or unknown compounds) were detected by

HPLC
analysis. Also, a substantially larger fraction of the THC was
delivered to the vapor by using pure THC.


Analysis of the vapor from the RXDIRECT2U
Vaporizer
found that using multiple passes it delivered 36% - 61% of the THC
in the sample. A more
recent study using pure cannabinoid
preparations achieved a maximum of 54%.
 For comparison, studies of cannabis cigarettes smoked via a
smoking machine under varying conditions of puff duration and air speed found
very similar efficiencies of 34% to 61%. Consequently, users can achieve the
desired effect with a similar amount of material as when smoking.


In a 2001 study testing a device called the M1 Volatizer,
the researchers found that "it is possible to
vaporize medically active THC by heating
marijuana to a temperature short of the
point of combustion, thereby eliminating or substantially reducing harmful smoke
toxins that are normally present in marijuana smoke." The M1 Volatizer, produced
THC at a temperature of 185°C (365°F), while eliminating three measured
combustion products,
benzene,
toluene and

naphthalene
.

Carbon monoxide
and smoke
tars were also
reduced, but not quantified.


These positive results are in contrast to
MAPS/NORML's
previous studies into vaporizers which found less encouraging results, leading
one to the conclusion that the effectiveness of vaporization varies greatly from
vaporizer to vaporizer. See

Factors affecting vaporizer output
for possible causes of variation.


A 1996 MAPS study tested
two simple vaporizer models against
water pipes and filtered and unfiltered
cannabis
cigarettes (joints).
The smoke produced by each was analyzed for solid particulates (tars) and 3
major cannabinoids. The various smoking methods were then rated based on their
cannabinoid-to-tar ratio. The two tested vaporizers performed up to 25% better
than unfiltered cannabis cigarettes (second best) in terms of tar delivery.
However, both vaporizers produced more than ten times more tars than
cannabinoids, which may partly be attributable to the low potency (2.3%) of the
NIDA-supplied
cannabis used in the study.
Surprisingly, the same study found that water pipes (bongs)
and filtered cigarettes performed 30% worse than regular, unfiltered
joints. The reason was that waterpipes and filters filter out psychoactive THC
with the tars, thereby requiring users to smoke more to reach their desired
effect. The study did not, however, rule out the possibility that
waterpipes could have other benefits,
such as filtering out harmful gases such as carbon monoxide.


These studies have not measured the presence of toxic gases, such as
ammonia,

hydrogen cyanide
and carbon monoxide, though previous studies have indicated
unquantified decreases in carbon monoxide with
vaporization.


Although vaporizers produce cleaner
vapors than smoking, they do not completely eliminate respiratory irritation. A
puff of strong vaporized cannabis will
occasionally cause coughing. This however, could be due to
THC itself, which is known to have a
strong expectorant effect.


 


Vaporizer
effectiveness


The wide range of results from tests of different
vaporizers suggest that the choice of
vaporizer is a major factor in determining extraction and delivery efficiency as
well as the amount of harmful byproducts produced, or not produced, as in the
case of a superior system. In Cannabis
and many other medicinal plants, the components responsible for the aromatic
nature of the plant will often vaporize at a low-end temperature in the range of
extraction temperature values for all the bioactive components. In
Cannabis, the temperature range across
which the actives will vaporize is at least 56°C (132°F) starting at around
127°C (260°F) where only aromatic compounds of minimal bioactivity will release
and going all the way up to 200°C (392°F) with the higher end of this range
representing where the cannabinoids of
higher bioactivity appear to be released. It is believed that both the total
amount of actives delivered as well as the breadth of spectrum delivered per
inhalation is critical in determining the value of the delivered dose and, in
turn, systems that deliver the highest amount of actives and broadest spectrum
of actives per inhalation are believed to be the most effective for medicinal
applications: i.e. venturi enhanced extraction / convection based systems.


Proposed factors affecting output include:



  • Temperature

  • Specimen
    density

  • Weight, content of water and
    essential oils

  • Consistency of material in the filling chamber

  • Variety and potency of cannabis used

  • Different preparations such as crude flower tops,
    hashish,
    hash
    oil
    , etc.

  • Storage time of the vapor

  • Proportion of THC exhaled (breathing technique)


Not all those have been scientifically tested. Research using the vaporizer
found the delivery efficiency highest at around 226°C (439°F), falling to about
half efficiency at 150°C (302°F) to 180°C (356°F) degrees depending on material.
The purest preparations produced the highest efficiencies, about 54%
for pure THC versus 29% for plant material (female flower tops) with 12%

THCA
content. Besides THC, several other cannabinoids as well as a range of
other plant components including terpenoids were detected in the plant material.
Using pure THC in the RXDIRECT2U Vaporizer,
no degradation products (delta-8-THC (D8-THC), cannabinol (CBN), or unknown
compounds were detected by

HPLC
analysis.


The longer vapor is stored, the more
of the THC is lost as it condenses on the surface of the vaporizer or the
balloon. This loss may be negligible over a few minutes but may exceed 50% after
90 minutes.


Interestingly, the Leiden Univsersity study
found that as much as 30%–40% of inhaled THC was not absorbed by the
lungs and simply exhaled. However, they did not find large individual
differences in the amounts exhaled.


 


Byproducts of
vaporized cannabis











Cannabis after vaporization



Cannabis after vaporization




Unlike the black ashes produced by burning plants, the byproducts of
vaporization are usually brown.

Cannabis trichomes
containing very high concentrations of active compounds
burst during vaporization and appear flattened afterwards under a microscope.
The vaporized remains of cannabis may still contain THC or any number of the
other 60 cannabinoids found in the plant. It is possible to extract these
cannabinoids using a number of methods, including cooking, making a tincture, or
revaporizing. It is also possible to smoke these remains and gain a possibly
strong psychoactive effect, but the negative health effects typically leave this
option as a last resort. Some of the slang terms used to refer to the vaporized
remains of cannabis include: Browns, Cached, Cashums, Coffee Grounds, Duff,
Eva Brown, Floyd Tibbs, Gak, Mary Brown, No, Obama Browns, Post Roast, ReBurn,
Revap, Snizap, Spent, Toasties, Vapor-leavin's, Vapoo, Vapor poo, Vented,
Vapeweed, Vapedoof, Vaped Chron, or Vaped Bud
. When scraped off, the resin
buildup within a vaporizer, known as Scrapings, can also be re-vaporized
for a potent effect.


 


Use in the restaurant industry


A vaporizer is sometimes used by chefs as a method of applying controlled
heat to herbs and spices to release flavors that are otherwise difficult to
titrate or apply, or that might be spoiled by overheating during cooking.
"Chicago's Achatz uses the aroma-filled bags as place-mats, punctured when
plates are placed in front of the customer."


 


Table of vaporization temperatures































































Plant common name  ↓ Scientific name  ↓ Part utilized  ↓ Temperature  ↓
Eucalyptus






Eucalyptus globulus


Leaves 130°C (266°F)
Hops






Humulus lupulus


Cones 154°C (309°F)
Chamomile







Chamomilla recutita


Flowers 190°C (374°F)
Lavender







Lavandula angustifolia


Leaves 130°C (266°F)
Lemon balm







Melissa officinalis


Leaves 142°C (288°F)
Sage







Salvia officinalis


Leaves 190°C (374°F)
Thyme







Thymus vulgaris


Herb 190°C (374°F)
Cannabis





Cannabis
sativa


Flowers 180°C (356°F)
Tobacco






Nicotiana tabacum


Leaf 140-200°C[16]

 



OTHER HERBS YOU CAN USE IN YOUR RXDIRECT2U.COM VAPORIZER


 












Herbal Blends


RELAXATION

 
  • 3 Parts Chamomile

     

  • 1 Part Wild Lettuce

     

  • 1 Part Valerian

     

  • 1 Part Lavender

    ENERGY


  • 1 Part Eucalyptus

  • 1 Part Mint

  • 1 Part Ephedra

  • 1 Part Ground Guarana

  • ASTHMA

     
  • 6 Parts Lavender

     

  • 2 Parts Hyssop

     

  • 2 Parts Spearmint

    COUGH

     


  • 3 Parts Lavender

     

  • 2 Pats Thyme

     

  • 2 Parts Eucalyptus

  • HEADACHE

     
  • 6 Parts Lavender

     

  • 4 Parts Marjoram

     

  • 2 Parts Peppermint

    VITALITY

     


  • 8 Parts Peppermint

     

  • 7 Parts Rosemary

     

  • 5 Parts Orange

     

  • 3 Parts Grapefruit

     

  • 3 Parts Lemongrass


  • The Science of Vaporization


    From the microchip to polymer plastics to vaccinations to the World Wide Web
    technological advancements achieved in the last century touch nearly every
    aspect of our lives. Yet we've only begun to realize the potential of such
    astounding progress in science, industry and medicine.


    Each advancement opens the door to new avenues of discovery,
    new possibilities for a higher quality of life. Undeniably, human beings in the
    21st century enjoy more recreational and healthy living choices
    than ever before.


    Despite this ground swell of advancement, however, certain critical areas
    remain virtually untouched. Our methods of recreational drug delivery, most
    especially smoking, are one such example. Burning tobacco is an
    incredibly hazardous
    way to obtain the benefits of nicotine. Yet, until
    very recently no progress has been made in an alternate delivery system.


    Despite the past decade's considerable growth in the development of
    bio-engineered medications, our methods of delivering these or any substances to
    the body outside of a medically supervised environment remain
    limited and imprecise. For more on this, see the Addendum, but for now keep in
    mind that the hypodermic syringe predates the American Civil
    War and the first record of smoking is traced to the Mayans in 600 AD.


    Whether homeopathic remedies or synthesized
    medications
    , our current drug delivery techniques are basic, archaic,
    and verging on obsolete. Your doctor may deliver remedies via pills,
    syringes, skin patches, or particle
    inhalers
    . You may ingest herbal substances by
    swallowing raw or extracted plant material or by drinking tea brewed from
    suitable leaves.


    We can absorb certain effects through the skin by way of a
    poultice or salve, or we can inhale the desired essence through the smoke of the
    burning plant. Yet each of these methods has limitations and in some cases,
    outright dangers. It's been nearly four decades since
    technology has advanced enough to let us clearly see the hazards of taking a
    substance through the inhalation of its smoke; however, our advanced
    technologies have yet to be applied to an alternative method of Viably
    delivering these substances
    directly from the plants themselves.


    This is the 21st century! We can manufacture a human heart, yet we're
    chained to the carcinogenic byproducts of combustion
    in order to
    receive the desired herbal benefits. Not any more. Inhalation (Phyto means
    "plant"). Vaporization is a
    substance delivery method
    purer than smoking, quicker and more direct
    than swallowing pills, and painless compared to needles. It is the new
    revolution in substance delivery and is poised to strengthen and enrich the
    medical, homeopathic, and smoking industries.


    Smoking vs. Vaporizing








    Smoking vs. Vaporizing, Why
    Vaporize?


    Burning tobacco through the process of combustion is the
    oldest method known to man, however releasing the active ingredients of
    tobacco does not have to occur with combustion. Rather,
    vaporizing has the same effect as
    smoking
    , but does so without burning or combusting the plant
    material.


    By-products resulting from combustion include
    tar, ash, CO2, carbon monoxide
    and other gases & carcinogenic
    elements, many of which are known to increase the likelihood of several
    cancers. In addition, because smoking is basically breathing in fire,
    your lungs and throat are subjected to high amounts of heat, which is
    damaging no matter what the substance is.


    Combustion is also known to decrease and destroy
    a large percentage
    of the active ingredients contained in the plant
    material. Studies have shown that 25-50% of the active ingredients
    contained in the tobacco are destroyed by the act of
    combustion itself. So not only does smoking create many unhealthy and
    unwanted side effects, but a large percentage of the plant material's active
    ingredients are lost in the process.


    In contrast, vaporizing warms the
    plant material to a temperature at which combustion cannot occur. The
    resulting effect occurs with the release of the active ingredient's
    in the form of a warm vapor. Since vaporizing does not use a flame or fire
    to ignite the plant material, none of the active ingredients are lost in the
    process. With every inhalation you're getting no smoke and more of the
    natural substance itself. Vapor contains little to no tar
    and is much cooler to inhale through ones' lungs, and pure vapor does not
    have any carcinogenic elements. Vapor is a healthier
    substitute to smoke!


    The vapor itself, is slightly visible when exhaled and
    does not create a smell like smoking does. In fact, there is no odor at all
    contained in vapor! Also, because vapor contains no smoke, the natural
    tastes found in the tobacco are more noticeably present.


    Vaporizing allows you to enjoy
    the same, if not greater stimulation than smoking creates,
    but without the unwanted side effects!


     


     


     

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