The reading is not stable, and the reading is moving up and down and is never stable. Please advise.
hi
well there are several reasons such as
1- if your dna sample have a large particles in this case centrifuge your sample (12000 g) and take the supernatant to measure
2- check your device may be it need a calibration or fixing
3- the input voltage can led to this too.
check these and there more .
Dr hayder thanks for ur answer but i wanna tell u that I use NaCl & Tris &edeta of normal analytical grade not molecular biology grade could it affect the result or no?
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