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Expansion Kit

$199.99 USD

4.33 out of 5 based on 9 customer ratings
4.33 (9) Write review

Know the potency of your flower and concentrate for total cannabinoids.

*Total cannabinoids is an aggregate of all cannabinoids including THCa, THC, CBDa, CBD, CBG, CBN

Includes everything you need to perform 10 flower or concentrate tests:

  • – Scale
  • – 100ml reagent
  • – 10x 22um filters
  • – 10ml syringe
  • – 10x 1ml syringes
  • – 3x sample containers
  • – 3x concentrate spoons
  • – Swizzle stick
  • – Quick start guide

Orders are fulfilled and shipped within 10 business days.

The expansion kit provides all the materials needed to properly test your flower and concentrates using your tCheck 2. Each item included has been carefully selected to ensure the highest level of testing accuracy with tCheck 2.



  • Ability to run 10 flower or concentrate tests with a 100ml bottle of reagent (included).


  • tCheck 2 device
  • iOS or Android device
Weight 2 lbs
Dimensions 7 × 7 × 6 in
  1. an anonymous tCheck user

    4 out of 5

    Happy to have this kit-Testing the potency of concentrates just got a whole lot more accessible.

  2. an anonymous tCheck user

    2 out of 5

    Once I got the product…If I had known it would get stuck in customs for almost a month- I wouldn’t have ordered it. Not their fault but they need a Canadian store selling these. That was ridiculous.

  3. Cheryl T.

    4 out of 5

    Easy to test concentrates- Been having a lot of fun testing my batches of rosin. Today’s came out at a nice 65.9%

  4. Aaron L.

    5 out of 5

    Good for bud testing. I need to know if I’m waisting expensive bud. Plus…. I’d like to know the potency of my bud (both grown and bought) am I getting what I pay for when bought? And….Am I doing a good job as a grower? And …..How do I know if I’m doing a good job with my oil if I don’t know the quality of the starting product. You guys developed a good bud tester.

  5. Wendy

    5 out of 5

    Glad to have the kit! Got ours as soon as they were back in stock. Glad to have our accuracy game back on.

  6. Paul M

    4 out of 5

    Fantastic customer service. Very prompt to reply and solve the problem without any run around. Please increase the reading greater than 15%, so that I do not need to do all the extra math.

  7. Adria M.

    (verified owner)
    5 out of 5

    Life changing -Long review alert!!! I’m an RN by license and degree. I had to step away from the bedside almost a year ago to the day. That’s when I decided to do something about my chronic condition and get a medical cannabis certification. After spending hundreds of dollars, I began tinkering around in the kitchen and started infusing my own butters, oils and making my own tinctures and RSO. I had some good times and some bad trips lol, the online calculators are nice, but when you mix several different strains and have to rely on averages , things start getting really complicated – even with my electric decarb device. When I found out about the Tcheck, I was dying to get it. Months of research, waitlists, and a scam or two; I finally got my very own!!! My edibles are so much easier to dose and reliable. I now work in the cannabis industry and have the opportunity to see what new harvests are available in my state as well as their stats! This month, I splurged on an expensive self contained vacuum purge/concentration machine and and 1.5 oz of really good trim and top tier flower, I just had to make some RSO. I ended up with 900 mL of tincture testing at 12.8 mg/mL and reduced it down to 7.3 mL of RSO in my shiny new machine. When I went to work and showed a colleague my calculations (1578 mg/mL), he kept insisting that the max concentration of ANYTHING is 1000 mg/mL and my calculations were wrong. He did his calculations based on estimations. In my 15 year nursing career, I’ve diluted and calculated countless medications – none of which I could recall in order to prove my point. I reached out to several medical professionals (pharmacists and anesthesiologists that have become friends and family over the years), they confirmed my math. But I wasn’t satisfied, I had to hear it from the horse’s mouth! Tcheck offers excellent customer support and Lucky, the customer support specialist consulted the engineering team to provide me with an answer that made sense!!! “It is definitely possible to have substances that have a density greater than 1000mg/ml. 1000mg = 1g. Water is 1g/ml or 1000mg/ml. A density greater than this simply means that the substance would sink when placed into water. Less than 1000mg/ml would mean that it floats. In my experience, RSO definitely sinks in MCT which has a density of 0.96, very close to water.” Test on Tcheck family!!! And if you’re on the fence, jump! This is a company that stands behind their product!

  8. Devon M.

    5 out of 5

    Testing machine!! I am testing everything! King of tests! Please make cases to hold everything tho!! My friends have me runnin all over testing their stuff too. DIY people – save $$$$, it’s worth it!!

  9. an anonymous tCheck user

    5 out of 5

    Love my little science kit, I feel like a pro everytime I pull out all the kit pieces to test my concentrate.

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