Trip blank definition

Trip blank means a sample of analyte-free media taken from the laboratory to the sampling site and returned to the laboratory unopened. A trip blank is used to document contamination attributable to shipping and field handling procedures per cooler per sampling event.
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Trip blank means a sample of reagent grade water which is used to determine possible contamination of samples
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Trip blank means a sample of reagent grade water or methanol which is used to determine possible contamination of sample bottles from volatile organic chemicals while in transit to and from the laboratory.
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Examples of Trip blank in a sentence

  • Trip blank: Trip blanks should be prepared at a frequency of one per day of sampling during which samples will be collected for VOCs. Trip blanks are prepared using reagent water (see Chapter One for definition) prior to the site visit at the time sample containers and kits are transported to the site.

  • Trip blank samples shall accompany investigatory sample containers collected for PFAS analysis from collection, during the duration of the sample event, and during shipment to the laboratory.

  • Trip blank sample information is considered minimum acceptance criteria when VOC analyses occur.

  • This should be a mid-range calibration.• Surrogate % recovery for each soil and water sample.• Matrix spike and duplicate for each constituent every 20 samples or each run, whichever is more frequent.• Method blank and duplicate for each extraction.• Trip blank for each shipping container containing groundwater samples submitted for VOC analysis.Appendix 4 Field Notes Field notes must be signed by the individual who performed the work described therein.

  • Trip blank analysis is not required if all samples in a shipping container are less than the project specific cleanup level.

  • Trip blank samples shall be given a sample date and time of when the trip blank is placed in the environmental sample cooler.

  • Trip blank containers shall be of the same type of sample container as those used for investigative samples collected for PFAS analysis.

  • Trip blank samples are collected to monitor potential cross contamination between samples during storage and transport, and equipment rinsate blank samples are collected to assess whether sampling equipment has been appropriately decontaminated.

  • Trip blank VOC containers and sample submission forms are labeled” Trip Blank “.

  • This should be a mid-range calibration.• Surrogate % recovery for each soil and water sample.• Matrix spike and duplicate for each constituent every 20 samples or each run, whichever is more frequent.• Method blank and duplicate for each extraction.• Trip blank for each shipping container containing groundwater samples submitted for VOC analysis.


More Definitions of Trip blank

Trip blank means a sample known not to contain the target analyte that is carried to the sampling site and transported to the laboratory for analysis without having been exposed to sampling procedures.]
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