NJbinglab high quality Graphite digester, usd in lab

2. Application Cases
1. Weigh 25ml of water sample, put it into a 50ml PTFE digestion tube, and shake it well.
2. Put the sample tube into the graphite digestion instrument for digestion.
3. After the digestion is completed, put the fixed volume sample on the machine for detection.
(Sample addition: 2ml nitric acid; heating: temperature 140℃, heating time 20min, holding time 2h; cooling: 5min; fixed volume: 25ml.)