quantity testing is usually a separate line item and

weigh the vial before you reconstitute. it costs nothing and catches the common failure

a supplier disputing a result is rare here and it has never gone well for the supplier

weigh the vial before you reconstitute. it costs nothing and catches the common failure

i test roughly every tenth vial. it is a sampling strategy, not paranoia

my sheet has 3 lots from WWB with a spread under a point, which is tight

thats a fill problem

the honest limits: hobby chain of custody is weak and any result here should be read with that in mind

coming back after 14 months with a follow up result, where do i put it

is anyone tracking results over time in a way they would share

a point or two between the certificate and an independent result is inside what two labs disagree by

how do you separate batch variance from supplier variance