Marquis Reagent Test Kit by Test Kit Plus in El Paso
About this item
- Single Marquis colorimetric reagent for presumptive substance identification
- Read results by color in 30 to 60 seconds against the included chart
- Reacts with MDMA, amphetamines, methamphetamine, opiates, NBOMe, 2C-x and more
- Up to 100 tests (regular) or up to 200 tests (large), one to two drops each
- Kit includes testing fluid, multi-use vial, storage jar, and color chart
- Lasts over 4 years stored cool and upright; refrigerate, do not freeze
- Liquid format for adult, personal harm-reduction use only
- In stock for same-day pickup at all 10 El Paso Smoke Shops locations
Product description
Need a Marquis reagent test kit in El Paso today? Test Kit Plus packs a single colorimetric reagent, a multi-use vial, a storage jar, and a printed color chart. Walk into any of our 10 neighborhood stores and pick one up the same day.
How the Marquis reagent works
This is a harm-reduction purity check, made for adults who want to know more about a substance before deciding anything. You add one or two drops of reagent to a small sample, then watch the color over 30 to 60 seconds. Match that color to the included chart to read the presumptive result. The Marquis reagent reacts with many compounds, so the shade tells you what is likely present, not a guaranteed answer.
What is in the kit
Every kit comes with a bottle of testing fluid, a multi-use testing vial, a protective storage and transport jar, and a printed color chart with instructions. The Marquis reagent reacts on contact with a long analyte list, including MDMA, MDA, amphetamine, methamphetamine, opiates like codeine and morphine, NBOMe compounds, and several 2C-x phenethylamines. The reagent uses the same chemistry found in U.S. Justice Department reagents.
Storage, shelf life, and capacity
Stored right, this reagent lasts over four years. Keep it cool and upright, out of long direct sunlight, at a steady 36 to 72 degrees Fahrenheit. A refrigerator is ideal, but do not freeze it. The regular bottle is good for up to 100 tests and the large bottle for up to 200, since each check uses only one or two drops. That makes one bottle last a long while.
Same-day pickup across El Paso
We keep the Test Kit Plus Marquis reagent kit on the shelf at all ten El Paso Smoke Shops locations. Check store stock, reserve it online, and pick it up the same day. Bring a valid photo ID, since this is a 21-and-older product checked at the counter. Friendly hosts are on hand if you have a quick question about reading the chart.
Swing by your nearest El Paso Smoke Shops for the Test Kit Plus Marquis reagent kit. Same-day in-store pickup, helpful hosts, and a presumptive purity check you can read in under a minute. Find your store, confirm stock, and grab one today.
Specifications
- Brand
- Test Kit Plus
- Type
- Reagent kit (purity / harm-reduction check)
- Reagent
- Marquis (single colorimetric reagent)
- Reagent Chemistry
- Same reagent chemicals found in U.S. Justice Department reagents
- Format
- Liquid
- Reagent Volume
- 10 mL
- Tests Per Bottle
- Up to 100 (regular); up to 200 (large)
- Sample Application
- Place 1-2 drops of reagent on the sample; keep the sample off the bottle nozzle
- Result Time
- Observe the color change over 30-60 seconds
- Read Method
- Compare the color against the included reaction chart
- Color Chart Included
- Yes
- Detects
- MDMA, MDA, amphetamine, methamphetamine, opiates (codeine, heroin, morphine), 2C-B, 2C-E, 2C-I, NBOMe, DMT, mescaline, MDPV
- Full Reaction List
- 25I-NBOMe, 2C-B, 2C-E, 2C-I, 3-MeO-PCE, 3-MeO-PCP, 5-APB, 5-MeO-DMT, 6-APB, amphetamine, aspirin, codeine, DMT, ethylone, heroin, ibuprofen, lisdexamfetamine, MDA, MDE, MDMA, MDPV, mescaline, methamphetamine, methylone, modafinil, morphine, oxycodone, sugar, xylazine
- Kit Contents
- Testing fluid bottle, multi-use testing vial, protective storage jar, color chart with instructions
- Storage
- Cool, upright, out of direct sunlight; steady 36-72 F (2-22 C); refrigerate, do not freeze
- Shelf Life
- Over 4 years with proper storage
- Use
- Adult personal harm-reduction use only; presumptive, not 100% conclusive
- Price
- $23.99
Questions & Answers
What does the Marquis reagent test kit check for?
The Marquis reagent gives a presumptive color reaction for many substances, including MDMA, MDA, amphetamine, methamphetamine, opiates, NBOMe compounds, 2C-x phenethylamines, DMT, mescaline, and MDPV. You match the resulting color to the included chart to read which compound is most likely present.
How do you read a Marquis reagent result?
Place one or two drops of reagent onto a small sample, keeping the sample off the bottle nozzle. Watch the color develop over 30 to 60 seconds, then compare that color to the printed reaction chart in the kit. The closest match is your presumptive result.
How many tests does one bottle do?
The regular bottle handles up to 100 tests and the large bottle up to 200, because each check uses only one or two drops. Actual count varies with drop size, but a single bottle lasts most people a long time before it runs low.
How long does the reagent last and how should I store it?
Stored properly, the reagent lasts over four years. Keep it cool and upright, out of prolonged direct sunlight, at a steady 36 to 72 degrees Fahrenheit. A refrigerator is ideal. Do not freeze it, and let it return to room temperature before use.
Is a Marquis reagent result 100 percent conclusive?
No. Reagent testing is presumptive and never fully conclusive. A color reaction shows what is likely present, not a definitive identity or purity figure. For more certainty, people often pair Marquis with additional reagents or chart readings, since the kit is an informational tool, not a lab.
What comes in the kit?
Each kit includes a bottle of testing fluid, a multi-use testing vial, a protective storage and transport jar, and a printed color chart with instructions. The vial and jar let you run and store checks neatly, and the chart is what you read your color against.
Who is this product for?
It is sold for lawful adult personal harm-reduction use, meaning helping someone know more about a substance before they decide anything. It is not a medical device and gives no dosing or sourcing guidance. Buyers must be 21 or older with a valid photo ID.
Where can I buy a Marquis reagent test kit in El Paso?
We stock the Test Kit Plus Marquis reagent kit at all ten El Paso Smoke Shops locations. Check stock at your nearest store, reserve it online, and pick it up the same day with a valid 21-and-older photo ID at the counter.
This is a harm-reduction reagent kit for lawful adult personal use, and results are presumptive, never 100% conclusive. You must be 21 or older to buy it. Bring a valid photo ID, which our hosts check at the counter at any of our 10 El Paso locations. In-store pickup only.









