03:19 Nov 8, 2006 |
English language (monolingual) [PRO] Medical - Chemistry; Chem Sci/Eng | |||||||
---|---|---|---|---|---|---|---|
|
| ||||||
| Selected response from: Tony M France Local time: 01:25 | ||||||
Grading comment
|
SUMMARY OF ALL EXPLANATIONS PROVIDED | ||||
---|---|---|---|---|
4 +5 | reagent specifically intended for zero calibration |
| ||
5 +2 | calibrador de cero |
|
reagent specifically intended for zero calibration Explanation: Yes, of course you're right, it's the 'neutral' or control' reaganet that is specifically guaranteed not to contain any of the substance to be detected. The sentence goes on to say "...using 3 lots of reagents...", meaning they didn't even trust one batch to be OK, so they played safe and used 3 different batches. |
| |
Grading comment
| ||