COD 500 mg/L calibration standard, (CRM), Supelco®

: Merck

COD 500 mg/L calibration standard, (CRM), Supelco®

: Merck

Environmentally Preferable:

Frequently Bought Together

Buffer solutions, Certipur®, colour coded, Supelco®

: Merck

Nickel standard solution, 1000 mg/L Ni in 0,5 M nitric acid (from Ni((NO₃)₂) Certipur® standard for AAS, Supelco®

: Merck

VWR® Serological Pipette, Standard Line

: VWR Collection

VWR® AVS TITRINORM Buffer Solutions, 20 °C

: VWR Chemicals

Methanol ≥99.8%, HiPerSolv CHROMANORM® Reag. Ph. Eur., gradient grade for HPLC

: VWR Chemicals

Bottles, narrow neck, round, PPCO, with screw caps, Nalgene®

: Thermo Fisher Scientific

VWR® Volumetric Flasks, Class A, Glass, Clear, NS Plastic Stopper

: VWR Collection

Disodium hydrogen phosphate, anhydrous ≥99.0%, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®

: Merck

Tellurium standard solution, 1000 mg/L Te in 0,5 M nitric acid (from H₆TeO₆) Certipur® standard for AAS, Supelco®

: Merck

Mixed cellulose ester membranes, sterile, 0,45 µm, Whatman™

: Whatman products (Cytiva)

VWR®, Conductivity standard solutions

: VWR Chemicals

VWR®, Nitrile Gloves

: VWR Collection

Hydrochloric acid concentrate for dilution to 0.1 mol in aqueous solution, ConvoL NORMADOSE® volumetric solution

: VWR Chemicals

Potassium chloride 3 mol/l (3 N) in aqueous solution, Supelco®

: Merck

Hydrochloric acid 37%, EMSURE® ACS, ISO, Reag. Ph. Eur. for analysis, Supelco®

: Merck

VWR®, Transfer Pipettes, High Performance

: VWR Collection

Magnesium sulphate heptahydrate, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®

: Merck

Chlorophyll A, Sigma-Aldrich®

: SIGMA ALDRICH MICROSCOPY