Significant digits of gas chromatographic samples.

How accurate it is depends mainly on the instrument, that is, how many microliters your micro-sampler is, which is roughly the same as analytical chemistry. Leave it to one person to read.

If it is a syringe with 10 microliter, the minimum scale is 1 microliter or 0.5 microliter, and it is estimated that each reading is written as 1.0 microliter.

If it is a 2 microliter syringe, the minimum scale is 0. 1 microliter or 0.05 microliter. It is estimated that each reader should write 1.00 microliter.