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Air Sensitive 

Many samples currently being tested for purity are those that readily oxidize when exposed to air. Most of these samples are also extremely sensitive to environmental moisture. For an accurate evaluation of purity, air-sensitive samples require weighing under an inert atmosphere.

Why Midwest Microlab

Fast service, results are often available within 24 hours without a Rush charge.
Competitively priced services for the industry.
Micro analysis provides the most sensitive method for determining the purity of a compound.
Accurate to 0.3% for analysis.
Less than the cost of maintaining an in-house lab.
Results from micro analysis can help establish the structure of a compound.
Elemental analysis typically requires only 5 mg. of sample.

Need experienced Chemical Analysis for Research Submit Here!
  • Potable Water Testing


NEW – Analysis of Potable Water:


Coliert is a ISO Method

The International Organization for Standardization (ISO) uses Colilert-18 as the worldwide ISO standard 9308-2:2012 for detecting total coliforms and E. coli in water.

Detection Limit

The Colilert test detects coliforms and E. coli at 1 organism/100 mL.

Types of water testing

The Colilert test is U.S. Environmental Protection Agency (EPA) approved for several types of regulated water including:
Drinking water – total coliforms and E. coli
Surface/source water – E. coli
Ground water – E. coli
Ambient waters – E. coli including fresh, marine or estuarine surface water used for recreation, propagation of fish, shellfish, or wildlife; agriculture; industry;
From collection to results can normally be completed in 24 hours.
All water samples require 100 mL of sample to perform the test and correct sample handling is required to receive accurate results.

What is the purpose of testing?

Safety of your customers is our utmost concern and Midwest Microlab is dedicated to providing accurate results, expeditiously.


Hi, I wanted a price quote for a routine sample for single CHN analysis. I’ve sent samples to Midwest Microlab in the past and obtained excellent results.

Chistopher G. – Cincinnati, Ohio

Chistopher G. - Cincinnati, Ohio