---
product_id: 32505340
title: "Conductivity Standard 2-Pack — 250 mL (8.4 fl oz) Each: 100 μS and 1413 μS — NIST Traceable — for 2-Point Calibration"
brand: "biopharm"
price: "€ 46.44"
currency: EUR
in_stock: true
reviews_count: 7
category: "Biopharm"
url: https://www.desertcart.de/products/32505340-conductivity-standard-2-pack-250-ml-8-4-fl-oz
store_origin: DE
region: Germany
---

# Includes TDS cross-reference values NIST traceable accuracy 2-pack for dual-range calibration Conductivity Standard 2-Pack — 250 mL (8.4 fl oz) Each: 100 μS and 1413 μS — NIST Traceable — for 2-Point Calibration

**Brand:** biopharm
**Price:** € 46.44
**Availability:** ✅ In Stock

## Summary

> ⚡ Calibrate like a pro — precision you can measure, confidence you can feel!

## Quick Answers

- **What is this?** Conductivity Standard 2-Pack — 250 mL (8.4 fl oz) Each: 100 μS and 1413 μS — NIST Traceable — for 2-Point Calibration by biopharm
- **How much does it cost?** € 46.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/32505340-conductivity-standard-2-pack-250-ml-8-4-fl-oz)

## Best For

- biopharm enthusiasts

## Why This Product

- Trusted biopharm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Optimized Shelf Life:** Expires 1 year after manufacture, ensuring fresh, reliable standards for your critical measurements.
- • **NIST Traceable Confidence:** Calibrated against gold-standard potassium chloride references to guarantee measurement accuracy you can trust.
- • **Instant TDS Cross-Reference:** Built-in TDS values for NaCl and natural water curves streamline your water quality assessments.
- • **Comprehensive Calibration Kit:** Includes FREE Certificate of Analysis plus temperature vs conductivity tables for professional-grade validation.
- • **Dual-Range Precision Calibration:** Two 250 mL bottles cover low (100 μS) and mid-range (1413 μS) conductivity for flawless meter linearity.

## Overview

The Biopharm Conductivity Standard 2-Pack offers two 250 mL NIST-traceable solutions at 100 μS and 1413 μS for accurate 2-point calibration of conductivity meters. Designed to verify instrument linearity across typical working ranges, it includes TDS cross-reference values and a Certificate of Analysis, making it ideal for water testing, hydroponics, and aquaculture professionals seeking reliable, industry-standard calibration.

## Description

Don't assume that your conductivity meter is working correctly. Probes can get dirty, worn and damaged. Give yourself that feeling of confidence that comes from doing things the right way. We suggest you use 2 calibration standards to cover a range that you normally work within to verify the linearity of the instrument. A different correction factor may be required for high EC values compared to low EC values. If your meter is essentially linear over the entire calibration range you can feel confident in your measurement results. TDS is an old terminology still used today in some water testing applications. It attempts to correlate Total Dissolved Solids (TDS) with conductivity. But because the conductivity depends upon exactly which "solids" are dissolved it can vary widely with different situations. Biopharm conductivity standards are calibrated using NIST traceable potassium chloride conductivity reference standards and are shown as uS/cm at 25 C. We may include a "TDS" cross reference value for those meters that have TDS scales but we want you to understand the limitations of this terminology. Some of our standards cross-reference TDS values for ppm NaCl and also TDS from the "442" natural water curve which are more likely to fit readings used in water testing, hydroponic and aquaculture applications. We suggest you use EC (electrical conductivity) whose readings are usually microSiemens per centimeter or microMho per centimeter (uS/cm or uMho/cm).

Review: Buen producto - Producto excelente calidad se corresponde con la descripción
Review: It is useful for quickly calibrations - It is useful for quickly calibrations. I used it to be sure if my new HANNA conductivity meter was well calibrated. It was very important to take the decision for to chance the membranes in a reverse osmosis in a water treatment plant. Excellent product. Good and cheap.

## Features

- Convenient 2-pack Enables Linearity Calibration
- Accurate NIST Traceable Standards
- TDS Cross Reference Values Included
- FREE Certificate of Analysis and Temperature vs Conductivity Tables
- Expires 1 Year After Date of Manufacture

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01F2OZY4U |
| Best Sellers Rank | #229,627 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #78 in Chemical Standards |
| Brand | Biopharm |
| Brand Name | Biopharm |
| Container Type | Bottle |
| Customer Reviews | 4.4 out of 5 stars 57 Reviews |
| Item Form | Liquid |
| Item Volume | 250 Milliliters |
| Manufacturer | Biopharm Inc |
| Package Information | Bottle |
| UPC | 721272377125 |
| Volume | 250 Milliliters |

## Product Details

- **Brand:** Biopharm
- **Item Form:** Liquid
- **Item Volume:** 250 Milliliters
- **Manufacturer:** Biopharm Inc
- **Package Information:** Bottle

## Images

![Conductivity Standard 2-Pack — 250 mL (8.4 fl oz) Each: 100 μS and 1413 μS — NIST Traceable — for 2-Point Calibration - Image 1](https://m.media-amazon.com/images/I/81hSQ3j6U3L.jpg)

## Questions & Answers

**Q: Will this work for calibrating a hanna pwt meter?**
A: Yes this is exactly what you use to calibrate and test that water conductivity meter.    I have been using BioPharm's standards for a few years now in our lab  and i am really pleased with their accuracy.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Buen producto
*by J***E on December 14, 2021*

Producto excelente calidad se corresponde con la descripción

### ⭐⭐⭐⭐⭐ It is useful for quickly calibrations
*by F***L on April 27, 2018*

It is useful for quickly calibrations. I used it to be sure if my new HANNA conductivity meter was well calibrated. It was very important to take the decision for to chance the membranes in a reverse osmosis in a water treatment plant. Excellent product. Good and cheap.

### ⭐⭐⭐⭐⭐ Todo estuvo a tiempo
*by M***O on September 5, 2020*

Todo fue bueno

## Frequently Bought Together

- Conductivity Standard 2-Pack — 250 mL (8.4 fl oz) Each: 100 μS and 1413 μS — NIST Traceable — for 2-Point Calibration
- pH Buffer Calibration Solution Kit 3-Pack: pH 4.00, pH 7.00, pH 10.00 Buffers — 250 ml (8.4 fl oz) Each — Color Coded — NIST Traceable for All pH Meters
- Extech EC500 Waterproof ExStik II pH/Conductivity Meter

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-04*