The GC-PRO is simple, easy-to-use, fast, and accurate.

No special skill-set is needed to test cannabis with the GC-PRO.

After an easy and quick onboarding, you can use your GC-PRO to test your cannabis and get accurate results on the spot, including for THC and CBD potency levels.

The GC-PRO is used worldwide to test cannabis and hemp.

Satisfied and loyal customers across the supply chain in 50 countries include:

  • Breeders
  • Growers
  • Processors
  • Dispensaries
  • Coffee shops
  • Pharmacies
  • QC Labs
GemmaCert Analytics

GemmaCert uses FDA-endorsed technology for easy and accurate cannabis testing.

GemmaCert’s flagship product, the GC-PRO, is a desktop cannabis and hemp testing solution designed for in-house or field testing delivering immediate results with lab-level accuracy.

If a sample tested by a certified lab using high performance liquid performance chromatography (HPLC) results in a THC potency of 10%, then the same exact sample tested by the GC-PRO shall produce a THC potency result between 9% and 11%.

The GC-PRO THC potency test kit is used for flower potency testing, ground material (biomass/trim), and crude extract. All that is needed for operation is a smartphone with Internet connection.

Every new GC-PRO customer is invited to a short onboarding session with a member of the GemmaCert Team to ensure successful adoption and implementation of best practices.

Once up and running, GemmaCert customers benefit from over-the-air updates which improve performance and introduce new testing features. As time passes, the GC-PRO performs better and delivers more.

Find the Right GC-PRO For You

For Professionals

GemmaCert Pro

For Small Businesses and Home Growers

GemmaCert Lite

GemmaCert FAQs

The GemmaCert device enables real-time potency, composition and quality analysis of the cannabis plant by non-destructive means, including the identification and quantification of primary active compounds, such as ∆9-Tetrahydrocannabinol (THC), Cannabidiol (CBD), and Cannabigerol (CBG). The GemmaCert device is perfect for in-house and field testing because it is fast, low-cost, easy-to-use, no sample preparation is required, portable, non-destrutive, eco-friendly, and you can also print a Certificate of Analysis (CoA) after each test.


The GemmaCert device uses a Near-Infrared Spectrometer (NIRS). NIRS is an FDA-endorsed diagnostic technology for evaluating the identity, strength, quality, purity, and pharmaceutical substances and products. NIRS is used in many industries for Quality Control. This includes food and beverage, agriculture, pharmaceutical, dietary supplements, polymers, oil, and gas. NIR spectroscopic analysis is fast, requires no sample preparation, and can analyze multiple parameters with a single measurement. The technology addresses the major requirements for a suitable analytical method that is rapid, suitable for high-throughput analysis, on-site capability, chemical specificity, and minimal sample preparation.

Test the same exact sample for THC potency on the GemmaCert device and then on an HPLC: if the HPLC result is 10% THC potency, then the GemmaCert device’s result will be between 9% and 11%. The minimum THC detection limit is 0.2%. The GemmaCert device accuracy is boosted by its proprietary 24-point analysis method. Other solutions on the market apply a single point analysis. This one-and-done method may be quicker, but it is not accurate.

The GemmaCert device tests for THC, CBD, CBG, and Water Activity (Aw). From time to time, software updates are released with new measurement capabilities.

The GemmaCert device tests dry flower buds, ground material, and crude extract/concentrates.

The GemmaCert device is a great tool for measuring breeding progress, determining the optimal harvest time, mitigating the risk your crop is harvested above the legal potency thresholds, pre-checking samples before mandatory testing for regulatory compliance, confirming incoming cannabis raw materials matches the purchased specification, measuring extraction efficiency, determining if your cannabis product is safe for storage or transport, and more.

Yes, the GemmaCert device can distinguish between Hemp and Cannabis since its minimum THC detection level is 0.2%.

Yes, the GemmaCert device requires an Internet connection for operation.

Yes, the GC app is compatible with Android only. We reccomend a dedicated smartphone/tablet for testing so you aren’t interupted with calls during analysis. Any basic/inexpensive Android with Wifi & Bluetooth cappabilities is suitable Additionally, in the future, an iOS app shall be released as well.

Both an HPLC and NIRS are considered secondary techniques. They need prediction models needs to be created before they can be used to analyse a sample. To identify or quantify a substance with an HPLC, the laboratory needs to prepare standard solutions of the substance and measure them to create a calibration curve. With NIRS, the prediction model is created processing spectra with known concentrations or known parameter values with the aid of chemometric software tools.

No, flowers must be dried to below 12% moisture content before analysis on GemmaCert. That said, we do have a reccomended protocol for wet flower analysis in which buds can be rapid dried in under 24 hours and tested (link to protocol)

We have collected over 15,000 cannabis & hemp samples from a wide range of potencies (sourced from North America, Europe & Israel) which have been measured first in a GemmaCert device and then immediately thereafter in our ISO 17025 certified HPLC lab. This makes up our validated cross-referenced database (calibration standard). We are constantly adding additional data which helps us improve performance and expand features over time.

That said, the term “calibration” can be confusing as it is often applied to different processes.
In summation, we perform a final calibration before shipping the device out. Aside from that there is a 20 second auto-calibration before each analysis. There is no need for periodic\manual calibrations or anything of the sort.

The GemmaCert device is our “all inclusive” package which includes the GC device, all accessories (flower pin, ground holder, extract holder) and the protective pelican case. You enjoy all future feature/software updates with no recurring or consumable fees whatsoever. The GC-Lite can only test whole flowers (no option for ground or extract) and only tests down to a minimum threshold of 1% THC. Additionally, it does not come with the Pelican case

GemmaCert is CE compliant, a testament to our high standards and safety. GemmaCert devices are compliant with EMC, Disposal (RoHS), and Safety Standards. These have been validated by an independent Certification, Testing and Inspection body, accredited to ISO/IEC 17065, ISO/IEC 17025 and ISO/IEC17020. For more see the GemmaCert Declaration of Conformity. GemmaCert is also compliant with European Pharmocopeia section 2.2.40.

We take data privacy extremely seriously and adopt many measures to minimise the risks. GemmaCert cloud-based servers are hosted by AWS, which complies with ISO 27018, a code of practice that focuses on protection of personal data in the cloud. AWS is also compliant with the European Union’s General Data Protection Regulation (GDPR).

What is the GemmaCert device?
The GemmaCert device enables real-time potency, composition and quality analysis of the cannabis plant by non-destructive means, including the identification and quantification of primary active compounds, such as ∆9-Tetrahydrocannabinol (THC), Cannabidiol (CBD), and Cannabigerol (CBG). The GemmaCert device is perfect for in-house and field testing because it is fast, low-cost, easy-to-use, no sample preparation is required, portable, non-destrutive, eco-friendly, and you can also print a Certificate of Analysis (CoA) after each test.
How does the GemmaCert device work?
The GemmaCert device uses a Near Infrared Spectrometer (NIRS). NIRS is an FDA-endorsed diagnostic technology for evaluating the identity, strength, quality, purity, and pharmaceutical substances and products. NIRS is used in many industries for Quality Control. This includes food and beverage, agriculture, pharmaceutical, dietary supplements, polymers, oil, and gas. NIR spectroscopic analysis is fast, requires no sample preparation, and can analyse multiple parameters with a single measurement. The technology addresses the major requirements for a suitable analytical method that is rapid, suitable for high-throughput analysis, on-site capability, chemical specificity, and minimal sample preparation.
How accurate is the GemmaCert device?
Test the same exact sample for THC potency on the GemmaCert device and then on an HPLC: if the HPLC result is 10% THC potency, then the GemmaCert device's result will be between 9% and 11%. The minimum THC detection limit is 0.2%. The GemmaCert device accuracy is boosted by its proprietary 24-point analysis method. Other solutions on the market apply a single point analysis. This one-and-done method may be quicker, but it is not accurate.
What can the GemmaCert device measure?
The GemmaCert device tests for THC, CBD, CBG, and Water Activity (Aw). From time to time, software updates are released with new measurement capabilities.
What types of cannabis products can the GemmaCert device measure?
The GemmaCert device tests dry flower buds, ground material, and crude extract/concentrates.
What are the best use cases for the GemmaCert device?
The GemmaCert device is a great tool for measuring breeding progress, determining the optimal harvest time, mitigating the risk your crop is harvested above the legal potency thresholds, pre-checking samples before mandatory testing for regulatory compliance, confirming incoming cannabis raw materials matches the purchased specification, measuring extraction efficiency, determining if your cannabis product is safe for storage or transport, and more.
Can the GemmaCert device distinguish between Hemp and Cannabis?
Yes, the GemmaCert device can distinguish between Hemp and Cannabis since its minimum THC detection level is 0.2%.
Do I need an Internet connection to operate the GemmaCert device?
Yes, the GemmaCert device requires an Internet connection for operation.
Do I need an Android smartphone to operate the GemmaCert device?
Yes, the GC app is compatible with Android only. We reccomend a dedicated smartphone/tablet for testing so you aren't interupted with calls during analysis. Any basic/inexpensive Android with Wifi & Bluetooth cappabilities is suitable Additionally, in the future, an iOS app shall be released as well.
How is the GemmaCert device different from an HPLC?
Both an HPLC and NIRS are considered secondary techniques. They need prediction models needs to be created before they can be used to analyse a sample. To identify or quantify a substance with an HPLC, the laboratory needs to prepare standard solutions of the substance and measure them to create a calibration curve. With NIRS, the prediction model is created processing spectra with known concentrations or known parameter values with the aid of chemometric software tools.
Can GemmaCert analyze wet flowers?
No, flowers must be dried to below 14% moisture content before analysis on GemmaCert. That said, we do have a reccomended protocol for wet flower analysis in which buds can be rapid dried in under 24 hours and tested (link to protocol)
How is GemmaCert calibrated?
We have collected over 15,000 cannabis & hemp samples from a wide range of potencies (sourced from North America, Europe & Israel) which have been measured first in a GemmaCert device and then immediately thereafter in our ISO 17025 certified HPLC lab. This makes up our validated cross-referenced database (calibration standard). We are constantly adding additional data which helps us improve performance and expand features over time. That said, the term “calibration” can be confusing as it is often applied to different processes. In summation, we perform a final calibration before shipping the device out. Aside from that there is a 20 second auto-calibration before each analysis. There is no need for periodic\manual calibrations or anything of the sort.
What is the difference between GemmaCert device & GC-LITE?
The GemmaCert device is our "all inclusive" package which includes the GC device, all accessories (flower pin, ground holder, extract holder) and the protective pelican case. You enjoy all future feature/software updates with no recurring or consumable fees whatsoever. The GC-Lite can only test whole flowers (no option for ground or extract) and only tests down to a minimum threshold of 1% THC. Additionally, it does not come with the Pelican case
What certifications does GemmaCert have?
GemmaCert is CE compliant, a testament to our high standards and safety. GemmaCert devices are compliant with EMC, Disposal (RoHS), and Safety Standards. These have been validated by an independent Certification, Testing and Inspection body, accredited to ISO/IEC 17065, ISO/IEC 17025 and ISO/IEC17020. For more see the GemmaCert Declaration of Conformity. GemmaCert is also compliant with European Pharmocopeia section 2.2.40.
How is my data protected on GemmaCert?
We take data privacy extremely seriously and adopt many measures to minimise the risks. GemmaCert cloud-based servers are hosted by AWS, which complies with ISO 27018, a code of practice that focuses on protection of personal data in the cloud. AWS is also compliant with the European Union’s General Data Protection Regulation (GDPR).