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Lab Reagents

Analytical Reagents

High-purity organic and inorganic reagents for spectrophotometry, complexometry, scintillation counting and qualitative tests, offered in GR, puriss and HPLC grades.
1,396 productsCOA + SDS with every lot
1,396 products · page 1 of 59
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(-)-Maackiain
CAS
2035-15-6
Formula
C16H12O5
MW
284.26 g/mol
ZX-047580
(±)-Diclofop
CAS
40843-25-2
Formula
C15H12Cl2O4
MW
327.2 g/mol
ZX-046552
(±)-Haloxyfop
CAS
69806-34-4
Formula
C15H11ClF3NO4
MW
361.7 g/mol
ZX-034915
(R)-Benalaxyl
CAS
98243-83-5
Formula
C20H23NO3
MW
325.4 g/mol
ZX-034500
(R)-Clodinafop
CAS
114420-56-3
Formula
C14H11ClFNO4
MW
311.69 g/mol
ZX-046745
(S)-Metalaxyl
CAS
69516-34-3
Formula
C15H21NO4
MW
279.33 g/mol
ZX-033829

Analytical reagents are the compounds that take part in a measurement rather than simply dissolving the sample. This sub-category collects colour-forming complexing agents, scintillators, oxidation-reduction reagents and high-purity organics used as test substances. Examples include 2,4,6-Tri(2-pyridyl)-1,3,5-triazine (GR 99%+) for iron determination, 2,5-Diphenyloxazole in scintillation grade, and (±)-Catechin hydrate at ≥96% by HPLC for antioxidant assays.

Because the reagent becomes part of the result, its impurities matter. A trace of iron in a TPTZ batch shifts the blank, and a fluorescent impurity in a scintillator lowers counting efficiency. Our listings state assay and grade, and the lot COA reports the tests that were run. Typical choices are:

  • GR or puriss grades for quantitative colorimetric work
  • Scintillation grade for liquid scintillation cocktails
  • HPLC-assayed grades for antioxidant and enzyme assays

Most items come in 5 g to 500 g packs, sealed and labelled with lot and expiry. Hazardous reagents are packed to dangerous-goods rules and can join the rest of your lab order in one shipment.

Analytical Reagents: questions buyers ask

Why does reagent grade affect the blank in a colorimetric method?
A colorimetric reagent often reacts with the same metal or functional group it is meant to measure. If the reagent itself contains that analyte as an impurity, the blank absorbance rises and the detection limit worsens. Higher grades such as GR control these trace impurities, which keeps blanks low and calibration lines straight.
How should light-sensitive analytical reagents be stored?
Keep them in their original amber or opaque containers, tightly closed, in a cool and dry cabinet away from direct sunlight. Prepare working solutions fresh or follow the stability period in your method. Discolouration of a solid or solution is a sign of degradation, and such material should be checked before use.
Can you supply a reagent named in an older method that is no longer common?
Often yes. Many classical reagents remain in production in India for teaching and regional standards. Search by name or CAS number first. If it is not listed, send the method reference through the quote panel and we will check sourcing or suggest a modern equivalent with similar selectivity.

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