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Laboratory Tips Safety proceedures, test reagents, drilling rubber stoppers, bending glass tubes, etc. Contributed to by chemists.

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Old 2003-06-12, 19:08
Masahed Masahed is offline
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Default Couple of Waterless A/B Q's

Can more than one dry 'tone rinse be performed on rhe NP after the presoak? SwiM was thinking about two to be sure the Turps sub is washed out.

When doing the warm,cold,warm d-h2o rinses is there any ratio? or is it ok to use about 5x the NP amount of d-h20?

Finally, when preparing the base, can a little bit more than 1g rock salt, 1g NaOh be used per g of pill mass? SwiM thinks that some will coat the grinder, be lost as dust, etc. Can he add 0.1g of rock salt & the same of NaOh to compensate?

Thanks.
 
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