EUTECH NIST Traceable Certified TDS Calibration Solution (442 Standard)

Product Description

EUTECH NIST Traceable Certified TDS Calibration Solutions are premium-quality reference standards designed for accurate calibration and verification of TDS (Total Dissolved Solids) meters and conductivity/TDS instruments. Manufactured under stringent quality control, these ready-to-use solutions are NIST traceable and supplied with a Certificate of Analysis (COA) for batch-specific accuracy. The solutions are formulated using the industry-recognized 442 Natural Water Standard (40% sodium sulfate, 40% sodium bicarbonate, 20% sodium chloride), making them ideal for natural water applications. 

Key Features

NIST Traceable Certified Standard

Supplied with Certificate of Analysis (COA)

Ready-to-use solution

High accuracy and excellent stability

Manufactured under ISO quality standards

Batch-to-batch consistency

Colorless solution

Long shelf life

Leak-proof HDPE bottle

Ideal for laboratory and field calibration

Suitable for routine verification and quality control

Compatible with most TDS meters using the corresponding standard value. 

Technical Specifications

Brand : EUTECH Instruments

Product Type : TDS Calibration Solution

Standard : 442 Natural Water Standard

Traceability : NIST Traceable

Certification : Certificate of Analysis (COA)

Physical Form : Liquid

Appearance : Clear, Colorless

Bottle Material : HDPE Plastic

Pack Size : 480 mL Bottle

Calibration Temperature : 25°C

Ready to Use : Yes

Shelf Life : As per manufacturer label

Storage Temperature : 15–30°C

Composition (442 Standard)

40% Sodium Sulfate (Na₂SO₄)

40% Sodium Bicarbonate (NaHCO₃)

20% Sodium Chloride (NaCl)

The 442 formulation closely represents the ionic composition of natural fresh water and is recommended for environmental and water treatment applications. 

Applications

Drinking Water Testing

RO Water Systems

Water Treatment Plants

Environmental Monitoring

Wastewater Analysis

Hydroponics

Aquaculture

Food & Beverage Industry

Pharmaceutical Laboratories

Chemical Laboratories

Research Institutes

Educational Laboratories

Compatible Instruments

Compatible with:

EUTECH TDS Testers

EUTECH Portable TDS Meters

EUTECH Benchtop TDS Meters

Conductivity/TDS Meters supporting 442 standard calibration

Multi-parameter Water Quality Meters

Advantages

Accurate calibration results

Reliable measurement performance

Improves instrument accuracy

Reduces measurement uncertainty

Suitable for GLP and laboratory quality systems

Excellent batch reproducibility

Ideal for routine calibration programs

Storage Instructions

Store tightly capped.

Keep away from direct sunlight.

Do not contaminate the bottle by returning used solution.

Store between 15°C and 30°C.

Do not freeze.

Package Contents

1 × EUTECH NIST Traceable TDS Calibration Solution (480 mL)

Certificate of Analysis (COA)

Product Label with Batch Number

Safety Information

Industries Served

Water & Wastewater

Environmental Laboratories

Pharmaceuticals

Food & Beverage

Power Plants

Chemical Processing

Agriculture & Hydroponics

Educational Institutions

Research Laboratories