|Posted on Monday, June 18, 2001 - 10:45 pm: ||
From ASCLD/LAB manual regarding this area:
The written technical procedures (18.104.22.168)should include descriptions of sample preparation methods, controls, standards, and calibration procedures. They should also include a discussion of precautions, possible sources of error, and literature references. (22.214.171.124) Reagents must be labeled with the identity of the reagent and date of preparation or "lot" number. Records must be maintained identifying who made the reagent and that it was tested and worked as expected to check th reliability of the reagent. This will give the examiner the necessary resource material to support written conclusions and expert testimony (126.96.36.199 to 188.8.131.52).
In other words, document who prepared the ninhydrin, PD, etc., solution; when they prepared it; and when it was tested for effectiveness (a properly prepared reagent may, for a variety of reasons, not do what it was expected to do). It is a simple log; date prepared, who prepared, and date of validation. A good log will show a DAILY "validation of reagent" entry, make a latent and treat it. Of course, make sure you have a record of the appropriate MSDS of all substances used in the reagent (RE: "discussion of precautions").
|Posted on Monday, June 18, 2001 - 04:51 pm: ||
My supervisor has given me an assignment. I have to create chemical/reagent logs, similar to those maintained by ASCLD-certified labs. What specific information needs to be tracked in these logs? Can anyone give me information on this?