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Laboratory Revision Number: 6 Simplot Standard Operating Procedure Revision Date: 09/22/2022 Procedure Number: Lab Material Handling-R6 I Lab Material Handling Page 4 of 7 bicarbonate solution (1-2%) for a few minutes and then rinsed three times with tap water and three times with DI water. 3) The bottles and caps must be completely dry before being given back to the operators. They are set upside down to dry. This process may be sped up by placing them in a fume hood to dry. a) If the lab is out of clean, dry sulfuric acid sample bottles, they can be rinsed with acetone after the tap and DI water rinses. This must be done in a fume hood, and the bottles must be left to dry in the fume hood. v. Ammonium Hydroxide (aqua) sample bottles should be emptied into the 2.5-gal plastic container in the hood in the Special Analysis Lab. When full, an Ammonia Storage operator or a Pellet Plant operator should recycle the aqua appropriately. 1) Aqua sample bottles should then be air dried in the hood to remove any ammonium hydroxide, then rinsed 3 times with DI water, and allowed to dry. vi. If a sample bottle needs extraordinary cleaning, see lab manager for instructions. c. Acetone Transfer & Disposal of Acetone Waste i. Care must be taken when transferring clean acetone from the 5-gallon drum into the dispensing safety drum. 1) A bonding wire should be attached to unpainted points on both drums to prevent a buildup of static electricity that may discharge and ignite the acetone fumes. ii. Excess acetone used in the cleaning of lab glassware and sample bottles shall be collected in a 1-gallon plastic container in the fume hood in the Special Analysis lab. This container shall be emptied into the acetone waste drum in the back chemical storage area. A bonding wire will be attached to an unpainted area of the valve on the funnel and to the handle of the plastic container to prevent a buildup of static electricity that may discharge and ignite the acetone fumes. r + 4- i i i }