Sampling Flashcards
title 22 exempts what type of samples from needed labels during transportation
samples for laboratory testing
what is a grab sample
a discrete sample taken at one point in time
what is a composite sample
aka: batch sampling
non-discrete - numerous samples collected over various sites and times
which type of sampling should be used for hazardous samples
grab sampling
what is judgment sampling
choosing a sample location that will be most representative
what is random sampling
sampling with no reason. sometimes used at HW dump sites
what is the random numbers table
a table to help determine random sampling
in collecting food samples how many should be collected?
3
2 for the department and 1 for violater
in collecting hazmat samples how many should be collected?
4
2 for department
2 for violator
duplicate samples
split samples
spiked samples
blank sample
duplicate - two separate samples taken at same place and same time
split - sample separated into equal portions. often analyzed by different labs or techniques
spiked - known qty of contaminant is added
blank - sample known to be free but handled in same manner as a control
food and biological samples should be analyzed when?
as soon as possible, not to exceed 6 hours after cooling