Primary Reference Standard
A Primary Reference Standard is a highly characterised substance used at the top of the calibration chain: working standards are prepared and checked against it. Pharmaceutical QC, microbiology and research laboratories buy primary reference standards for assay, method validation and potency testing.
This section lists more than 2,800 TOKU-E primary reference standards. Typical entries are antibiotics such as Actinomycin D, offered in 5 mg, 10 mg and 25 mg vials, and Amikacin in a 1 g pack, so you can buy the quantity that suits a single study or a running QC programme.
Pick the pack size from how many weighings your method needs and how long an opened vial will remain in use, and keep the primary standard separate from the working standards you derive from it. Where a method names a different primary standard, Lancetech Limited can quote it on request.
Filters (3 active)
Storage Temperature
-20°C592-8°C37≤30°C20-20°C. Protect from light.4≤ 30 °C12-8°C. Store in airtight container.1≤30°C. Store in an airtight container.1-20°C. Protect from moisture.1≤30°C. Protect from light.12-8°C. Protect from light.12-8 °C12-8°C. Hygroscopic. Desiccant required.1Product Class
Protein synthesis inhibitor6Cell wall synthesis inhibitor4Kinase inhibitor4Ergosterol / membrane-active antifungal4Beta-lactam3Apoptosis inducer3DNA synthesis inhibitor2Ribosome-targeting2Transcription inhibitor2Beta-lactam; Apoptosis inducer1Protein synthesis inhibitor; Beta-lactam1Solubility
Soluble in DMSO3Soluble in water1Soluble in water.1Slightly soluble in aqueous solution1Freely soluble in water1Freely soluble in aqueous solution1Imazapyr is highly soluble in water.1Ozenoxacin is soluble in DMSO.1Plazomicin Sulfate is soluble in water.1Soluble in ethanol and DMSO1Very slightly soluble in water1
(+)-Abscisic Acid (natural) 100 mg
