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Water Tests

Water Tests

Water tests are used to evaluate microbial content and chemical purity of water samples. Because water is a significant environmental component, microbial control is a requirement of all Good Manufacturing Practices. Tests can be performed on source water, process water, purified water, deionized water and highly purified water.

Nelson Laboratories will customize water tests to meet the precise needs of the sponsor.

Applicable Standards

USP 1231    |    Standard Methods for Examination of Water and Wastewater    |    Good Manufacturing Practices

Pricing/Quote

Test Price Request Quote
ENV210 - Water Tests (Microbial): Membrane Filtration, Aerobic bacteria only
Per sample1+$32.00
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ENV215 - Water Tests (Microbial): Membrane Filtration, Aerobic w/ ext. incub.
Per sample1+$32.00
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ENV220 - Water Tests (Microbial): Membrane Filtration, Anaerobic counts only
Per sample1+$32.00
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ENV230 - Water Tests (Microbial): Membrane Filtration, Fungal (sel. plates)
Per sample1+$32.00
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ENV240 - Water Tests (Microbial): Membrane Filtration, Aerobic and Fungal
Per sample1+$60.00
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MCC130 - Total Coliforms: Membrane Filtration Method, 2 replicates
Per test1+$80.00
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PWA305 - USP Water Analysis: Purified Water study (TOC/Conductivity)
Per test1 - 10
11 - 20
21+
$250.00
$230.00
Quote
Add
PWA320 - USP Water Analysis: Water for Injection (LAL/TOC/Conductivity)
Per test1+$355.00
Add
ENV210 - Water Tests (Microbial): Membrane Filtration, Aerobic bacteria only
Per sample1+$32.00
ENV215 - Water Tests (Microbial): Membrane Filtration, Aerobic w/ ext. incub.
Per sample1+$32.00
ENV220 - Water Tests (Microbial): Membrane Filtration, Anaerobic counts only
Per sample1+$32.00
ENV230 - Water Tests (Microbial): Membrane Filtration, Fungal (sel. plates)
Per sample1+$32.00
ENV240 - Water Tests (Microbial): Membrane Filtration, Aerobic and Fungal
Per sample1+$60.00
MCC130 - Total Coliforms: Membrane Filtration Method, 2 replicates
Per test1+$80.00
PWA305 - USP Water Analysis: Purified Water study (TOC/Conductivity)
Per test1 - 10
11 - 20
21+
$250.00
$230.00
Quote
PWA320 - USP Water Analysis: Water for Injection (LAL/TOC/Conductivity)
Per test1+$355.00

Turn Around Time

Standard turn around times (TAT) are listed below. Ask an expert for a specific consultation on your product.

Code Test TAT
ENV210 Water Tests (Microbial): Membrane Filtration, Aerobic bacteria only 7
ENV215 Water Tests (Microbial): Membrane Filtration, Aerobic w/ ext. incub. 14
ENV220 Water Tests (Microbial): Membrane Filtration, Anaerobic counts only 10
ENV230 Water Tests (Microbial): Membrane Filtration, Fungal (sel. plates) 10
ENV240 Water Tests (Microbial): Membrane Filtration, Aerobic and Fungal 10
MCC130 Total Coliforms: Membrane Filtration Method, 2 replicates 6
PWA305 USP Water Analysis: Purified Water study (TOC/Conductivity) 5
PWA320 USP Water Analysis: Water for Injection (LAL/TOC/Conductivity) 7
Code TAT
ENV210 7
ENV215 14
ENV220 10
ENV230 10
ENV240 10
MCC130 6
PWA305 5
PWA320 7

Sample Specifications

ENV210: Minimum 100 mL
ENV215: Minimum 100 mL
ENV220: Minimum 100 mL
ENV230: Minimum 100 mL
ENV240: Minimum 100 mL
MCC130: 200 mL, 2 samples included in test code for replicate testing
PWA320: 155 mL; please use appropriate sampling bottles.

Study Outline

In Water testing, water samples are filtered using a 0.45 micron filter membrane to capture microorganism. The membrane is then applied to an agar plate. After incubation, the colony forming units are counted to give the organisms per milliliter.

Analysis is generally performed by the test method described in the Standard Methods for Examination of Water and Wastewater, which indicates the use of membrane filtration and R2A agar. Depending on the type of water, plating may be performed on Soybean Casein Digest Agar or selective agar for fungal growth. The amount of sample filtered, incubation time and temperature parameters are variable and must be defined by the sponsor prior to testing. These variables are determined by the type of water sample.