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- Posts: 185
- Joined: Fri Jul 20, 2012 9:18 am
Only thing I can find are old-school glass pipettes.
Discussions about sample preparation: extraction, cleanup, derivatization, etc.
BMU_VMW wrote:
Hey I'm looking for a 'micro'-pipet with a max adjustable volume of 15ml.
Only thing I can find are old-school glass pipettes.
James_Ball wrote:
We use the auto pipettes from Rainin in 10ml sizes and do a weight check on them every morning before use. They seem to remain very accurate between servicing which we do every 6 months(send them off for refurb and recalibration). We have a rule to never use a one below 10% of the max volume to help prevent errors, so a 10ml we use down to 1ml and the 1000ul we use down to 100ul. Any smaller volumes we use micro syringes.
We don't use weight simply because it takes longer if you are trying to get an exact volume like 7.5ml several times in a row plus unless you are factoring in changes in density due to acid concentration and temperature and air pressure, the auto pipettes are in the same accuracy class as a tech trying to do such precision weighing on a 3 or 4 place balance in a room with a lot of air movement. When you are measuring out 50-100 samples per hour that just isn't feasible.
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