You searched for: Environmental Analysis Standards

Supplier: Hach

For accuracy checks in total organic carbon (TOC) determinations. Available as 20 ml sealed ampules.

Supplier: Hach

These mixed standards are ready to use, no dilutions are required. They contain ammonia nitrogen, nitrate nitrogen, COD, phosphate, sulphate and TOC.

Supplier: Hach

System for Analytical Quality Assurance (AQA), consisting of one combined standard/spiking solution and two round robin test solutions.

Supplier: WTW

BOD standard solution, 210 mg/l, : N/A

Supplier: Dräger

Calibration gas with nitrogen background in non refillable cylinder.

Supplier: ROTRONIC INSTRUMENTS

Although most relative humidity (RH) probes have excellent long-term stability, it is recommended that their calibration be checked regularly.

Supplier: PerkinElmer

Combustion calibration statndard for sulphur analysis, cystine (26,69% S), solid 4 g

Supplier: WTW

a-Ten 02552, anionic surfactants cell test - 25 determinations.

Supplier: Thermo Fisher Scientific

Hydrazine standard, Specpure®, : N/A, Matrix: 1% CH₃COOH

Supplier: WTW

These standard solutions for calibration contain 10 g of the ion to be measured per 10 liters.

Supplier: WTW

Standard solution for accuracy checks in potassium determinations.

Supplier: REAGECON

Total organic carbon (TOC) standard solution, 4 mg/l C as sucrose

Supplier: Merck

COD standard solution, Supelco®, 50000 mg/L, : N/A, For test kit(s): 1.01797, pH range: 3 - 5

Supplier: Merck

Nitrogen (total) standard solution, Supelco®, 100 mg/L N, : N/A, Matrix: H₂O, For test kit(s): 1.14763, pH range: 5 - 7

Supplier: Merck

TOC standard solution, Supelco®, 10,0 mg/L TOC, : N/A, Matrix: H₂O, pH range: 4 - 6

Supplier: REAGECON

Standards for M965D carbon dioxide analyser, for soft drinks and brewery applications.

Supplier: REAGECON

Ideal for use as control standards to verify that correct analysis for COD has taken place.

Supplier: Merck

The standard solutions offered below can be adjusted to a final concentration for the measurement range of a test system by dilution. In addition, these standards can be used to prepare spiking solutions for the standard addition procedure. They provide an economic and simple method of analytical quality control.

Supplier: REAGECON

Reagecon's EDTA 0,05 M is a fully factorised, high purity, stable product, developed and tested for titrations. This is an analytical volumetric solution, also called titrant, standard titrant or standard solution. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations also called potentiometric titration, to determine the end points by detection of any of several properties as detailed in several ChP monographs.

Supplier: LGC Standards PROMOCHEM

White clover (trace elements)

Supplier: Merck

TOC linearity set, Supelco®

Supplier: Merck

Bomb/Halogen QCS, Supelco®, : N/A

Supplier: LGC Standards PROMOCHEM

Certified reference materials (CRM) for gypsum and its constitutents.

Supplier: LGC Standards PROMOCHEM

Used on glass fibre filters.

Supplier: Merck

Sand - pH 2.80, Supelco®

Supplier: LGC Standards PROMOCHEM

NIST-1646A, estuarine sediment - metals

Supplier: Merck

Minerals, Supelco®, Certified reference material, : N/A

Supplier: CUSTOM MADE CHEMICALS LAB

TOC standard solution, 1000 mg/L

Supplier: LGC Standards PROMOCHEM

This standard reference material is intended to facilitate the development of chemical methods of analysis for trace elements.

Supplier: Merck

VOAs in soil 1 - low level, Supelco®, : N/A