Page 29 - Feed Lab
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Suguna Management System Ver 1.0 / SOP / FQL / P1 - 04 Page 1 of 6
4. Reagents and Chemicals
TExpiration date
REAGENTS PREPARATION
FThere are two requirements for labelling prepared TSafety information if required
solutions (reagents). The requirements depend on
whether the solution is used within the same day it Preparation numbers are required on all solutions
was prepared or if it will be stored for a longer period made in house with the following:
of time. FException: Dilutions of a stock reference solution in
order to prepare a standard curve.
FSame Day - Solutions that are prepared every day
must have the following: FPreparation numbers are not required in this case,
but the preparation number or information for the
TReagent name (contents)
stock solution should be listed.
TConcentration
FThe general rule for expiration dating or solutions
TDate of preparation prepared in-house is one year. An exception to this
rule includes chemicals for which the manufacturer
TLaboratory Analyst initials
has indicted the expiration date. Exception may
TSafety information if required also be noted in analyte procedures.
FExtended Use - Reagent solutions that will not be NOTE: The expiration date of the solution should not
discarded the same day must have the following exceed the expiration of any of the components.
information on a label:
One format that may be used for preparation numbers
TReagent name (contents) is the format XXXX-YYYY, where XXXX is the laboratory
notebook number and YYYY is a sequential number
TConcentration beginning with 0001. The preceding 0's are required
TDate prepared so that the number is always a four-digit number.
TAnalyst initials (person preparing the METHODS OF EXPRESSING CONCENTRATION
solution) OF SOLUTION
TPreparation number FStandard solution : It is a solution of known
concentration normally expressed in Normality,
Prepared by : Approved by :
19 Director - Technical
