Supplier: VWR Chemicals

Sodium hydroxide 50% in aqueous solution Reag. Ph. Eur. 1081406 carbonate-free

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: Thermo Fisher Scientific

Celite® 545, filter aid, treated with sodium carbonate, flux calcined

Supplier: LGC Standards PROMOCHEM

These standards are intended for use as a acidimetric standard.

Supplier: REAGECON

Sodium hydroxide 0.1 mol/l (0.1 N) in aqueous solution volumetric solution low in carbonate

Supplier: Honeywell Chemicals

Certified Reference Material (CRM).

Supplier: Honeywell Chemicals

Certified Reference Material (CRM).

Supplier: Honeywell Chemicals

Certified Reference Material (CRM).

Supplier: Merck

Materials for the precise calibration and monitoring of pH instruments.

Supplier: Honeywell Chemicals

Certified Reference Material (CRM).

Supplier: Honeywell Chemicals

Celite® 545, filter aid ≥99% ≤125.30 μm (71% (acc. Cilas)), treated with sodium carbonate, flux calcined, Fluka™

Supplier: VWR Chemicals

CRM's - secondary reference materials intended for standardisation of volumetric solutions in accordance with the Pharmacopoeia (Ph. Eur. and USP). These volumetric standards are prepared from high purity salts. Certified mass fraction is determined by classical analysis according to ISO/IEC 17025. Homogeneity and stability studies have been performed according to the requirements of ISO 17034 and ISO Guide 35. All volumetric standards are traceable to SI (NIST or BAM).

Supplier: VWR Chemicals

The VWR® range of secondary reference standards offers extraordinary purity and homogeneity, and are perfectly suited for the verification factors for volumetric solutions.

Supplier: Hach

Digital titration provides a more precise and accurate method than the drop test method.

Supplier: Atago

The PAL series with special scales are pocket instruments delivering rapid results for automotive, aviation, heat transfer and industrial applications.

Supplier: NEW PIG

One easy step for safer acid or caustic cleanup.

Supplier: Hach

The drop count test is a simple, easy and cost-effective way to test for many parameters like chlorine, chloride, dissolved oxygen, carbon dioxide, sulphite, nitrogen, formaldehyde, and more.

Supplier: Thermo Fisher Scientific

Stabilized with sodium carbonate

Supplier: VWR Chemicals

Standard solutions of sodium carbonate.

Supplier: VWR Chemicals

Starting materials:
Solution A. Copper sulfate R/ Water R
Solution B. anhydrous Sodium carbonate R / Potassium sodium tartrate R/ Sodium hydrogen carbonate R/ anhydrous Sodium sulfate R/ Water R

Supplier: Thermo Fisher Scientific

Stabilized with ca 0.1% sodium carbonate

Supplier: Merck

Sodium bicarbonate/Sodium carbonate concentrate 1 * 1 L

Supplier: Thermo Fisher Scientific

Stabilized with 0.2% anhyd. sodium carbonate

Supplier: Thermo Fisher Scientific

Stab. with ca 0.1% sodium carbonate, 98%

Supplier: Merck

Sodium carbonate Certipur 1 * 80 g

Supplier: WTW

Sodium hydroxide pellets is used as the carbon dioxide absorbent for BOD measurements

Supplier: VWR Chemicals

Starting materials: Copper sulfate R / Citric acid R / anhydrous Sodium carbonate R / Water R

Supplier: Merck

Sodium carbonate solution c(Na2CO3) = 0.05 mol/l (0.1 N) Titripur 1 * 1 L

Supplier: Avantor

Sodium Carbonate, Anhydrous, N.F., Multi-Compendial 1 * 500 g

Supplier: Avantor

SODIUM CARBONATE 0.05 MOL/LDILUT-IT 1 * 60 mL