In recognition of the Holidays, please note that National Testing Laboratories will not accept samples for analysis on the following days:

  • Wednesday, December 24th
  • Thursday, December 25th
  • Friday December 26th
  • Thursday, January 1st
  • Friday, January 2nd

Therefore if you have purchased a test kit recently you should plan the collection of your water sample and its subsequent shipping to NTL for analysis accordingly.

Why does this matter?

Several of the tests offered in the National Testing Laboratories water testing packages sold in our Water Test Kit Store have time and temperature requirements that if exceeded, will invalidate the test results.

If you have any questions, please do not hesitate to contact us and we will do our best to answer!

National Testing Labs 30 Parameter Test Kit
National Testing Labs
30 Parameter Test Kit

National Testing Labs 83 Parameter Test Kit
National Testing Labs
83 Parameter Test Kit

National Testing Labs 103 Parameter Test Kit
National Testing Labs
103 Parameter Test Kit


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