Cannabis Heavy Metal Testing
Fisherbrand™ Sterile Polystyrene Disposable Serological Pipets with Magnifier Stripe
Pipets have improved optical clarity — high-contrast black markings make volumes easier to read
Fisherbrand™ Standard Disposable Transfer Pipettes, Nongraduated; Length: 5.875 in.; Capacity: 7.7mL
Single squeeze draws up to 3.2mL
Falcon™ Disposable Polystyrene Serological Pipets, Sterile
Features exceptionally crisp, dark, easy-to-read printing with reverse and negative graduations. Corning™ Falcon™ Disposable Polystyrene Serological Pipets are individually wrapped.
Fisherbrand™ Disposable Borosilicate Glass Pasteur Pipets
Constriction near top prevents plugs from slipping into pipette body
Fisherbrand™ Isotemp™ Hot Plate Stirrer, Ambient to 540°C, Ceramic
Stirring Range: 50 to 1500 rpm; Shape: Square; Size: 7.25 x 7.25 in.; Plug Type: US-Style
Corning™ Stripette™ Paper/Plastic-Wrapped Disposable Polystyrene Serological Pipettes, Sterile
Manufactured with optically clear polystyrene for accurate measurement. Corning™ Stripette™ Individually Wrapped Plastic or Paper/Plastic Disposable Polystyrene Serological Pipets are ideal for sterile tissue culture applications, especially while wearing latex gloves, as the wrap reduces static cling.
Fisherbrand™ Pipet Controller
A powerful, lightweight and ergonomically designed pipetting controller for all commonly used glass or plastic pipettes
Fisherbrand™ Safety Bulb Pipette Filler, Red
Fill any standard size pipet without the risk of cracking or chipping. Fisherbrand™ Safety Bulb Pipet Filler uses an ABS attachment with a silicone adapter that seals around pipets without twisting. Comes with an elastic band for convenient hanging on bottles or wrist.
PYREX™ Low Form Griffin Beakers
Offers optimum balance between thermal shock resistance and mechanical strength
Fisherbrand™ SureOne™ Micropoint Pipette Tips, Universal Fit, Non-Filtered
New, improved Fisherbrand SureOne Reload system offers a full line of micropoint universal fit pipet tips
Axygen™ Aerosol Filter Tips, Sterile
Prevent cross-contamination with robotic barrier tips. Axygen™ Aerosol Filter Tips, Sterile are e-beam irradiated to prevent product degradation, comply with USP 3127 (Heavy Metal Contamination) and are free of leachable additives. Available in a wide variety of tip styles.
Silver Nitrate Solution (0.1N (N/10)/Certified), Fisher Chemical™
CAS: 7761-88-8 Molecular Formula: AgNO3 Molecular Weight (g/mol): 169.87 MDL Number: MFCD00003414 InChI Key: SQGYOTSLMSWVJD-UHFFFAOYSA-N Synonym: argenti nitras, argerol, lunar caustic, nitrate d'argent, nitric acid silver i salt, silbernitrat, silver i nitrate, silver mononitrate, silver nitrate, silvernitrate PubChem CID: 24470 ChEBI: CHEBI:32130 IUPAC Name: silver(1+) nitrate SMILES: [Ag+].[O-][N+]([O-])=O
Basix™ Universal Pipette Tips
The Basix™ pipette tip portfolio consists of the most commonly used tip volumes and packaging options in todays laboratory.
Hydrogen Peroxide, 30% (Certified ACS), Fisher Chemical™
CAS: 7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 MDL Number: MFCD00011333 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Synonym: albone, hioxyl, hydrogen dioxide, inhibine, interox, kastone, oxydol, perhydrol, peroxaan, superoxol PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO
Gilson™ MICROMAN™ Capillary Pistons
Made specifically for Gilson™ MICROMAN™ E pipets.Gilson™ MICROMAN™ E Capillary Pistons provide reproducible, reliable results even with the most viscous or volatile liquids.Available in a wide range of volumes and designs, both in sterilized and standard versions, to suit your needs perfectly.
Iodine Solution, 0.1N (N/10) (Certified), Fisher Chemical™
CAS: 7681-11-0 Molecular Formula: IK Molecular Weight (g/mol): 166.003 MDL Number: MFCD00011355 InChI Key: NLKNQRATVPKPDG-UHFFFAOYSA-M Synonym: asmofug e, kali iodide, kisol, knollide, pima, potassium diiodide, potassium iodide, potassium iodide ki, potassium monoiodide, thyro-block PubChem CID: 4875 ChEBI: CHEBI:8346 IUPAC Name: potassium;iodide SMILES: [K+].[I-]
Thermo Scientific™ Finntip™ Specific Pipette Tips
Ensure accurate, precise pipetting. Finntip™ Specific Pipette Tips are designed using our knowledge of liquid handling, with uniformly smooth, hydrophobic surfaces that prevent liquid retention.
Potassium Permanganate Solution, 0.1N (N/10) (Certified), Fisher Chemical™
CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 MDL Number: MFCD00011364 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N Synonym: algae-k, argucide, cairox, chameleon mineral, condy's crystals, insta-perm, permanganate of potash, potassium permanganate, solo san soo, walko tablets PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]
Eppendorf™ epTIPS LoRetention Tips, Eppendorf quality, Reloads
Increase reproducibility and and notably reduce the loss of expensive reagents
Corning™ Pyroceram™ Hot Plate Stirrer, 550°C, Glass Ceramic
Stirring Range: 60 to 1150 rpm; Shape: Rectangle; Size: 5 x 7 in.; Plug Type: US-Style
Cannabis, like other plants, can absorb heavy metals from the soil, water, and air. These elements can contribute to cancer, heart disease, and other health problems, which may be an issue for immunocompromised patients who use the products.
Ideally, cannabis for human consumption should be entirely free from heavy metals. However, contamination levels will vary by farm and the uptake rates of the particular cannabis strain.
Regardless of the source, cannabis can be expected to contain at least some heavy metals. These can come from fertilizers and pesticides or be naturally present in the soil and water. Heavy metal contamination can also occur during processing.
Levels of heavy metals are monitored to ensure that products comply with local and national regulatory guidelines, which can vary considerably. Most testing includes arsenic, cadmium, lead, and mercury, and some areas also require testing for barium, chromium, selenium, and silver.
Cannabis heavy metal testing can be performed in multiple ways, including atomic spectrometry, atomic absorption (AA), inductively coupled plasma optical emission spectroscopy (ICP/OES) and inductively coupled plasma mass spectrometry (ICP/MS). Various chromatography reagents and ICP standards are available to support this testing.
The AA method would need to have a greater sensitivity, and a graphite furnace atomic absorption (GFAA) is recommended. Mercury measurements may require cold vapor atomic absorption spectroscopy (CVAAS) to reach the required detection limits in the low parts per billion (ppb).
Whereas AA measures one element at a time, ICP and ICP/MS can simultaneously measure multiple elements. Cannabis testing may also require introduction with an ultrasonic nebulizer (USN), which can increase the sensitivity 10-fold.
Arsenic testing may require special sample preparation because arsenic can appear in the organic form or the more-toxic inorganic form.