Apvendix A Urine Bioassay Chemistry Procedures 137 ae Cs and 905, Assay of Urine in the Absence of Fresh Fission Products Reagents Strontium carrier solution: Yttrium carrier solution: Calcium chloride: 20 mg Sr/ml 20 mg Y/ml Q.1 M Diethylhexylphosphoric acid: Nitric Acid: Hydrochloric: 20% in toluene 16N 0.08 N Ammonium hydroxide: 15 N Ammonium hydroxide wash solution: Sodium hydroxide: 1 ml 15 N in 500 ml HO 6 M Sample Preparation for 1376, Analysis 1. Loosen cap on sample bottle and place into ultrasonic cleaner for approximately 10 minutes to loosen and disperse solids. 2. Pour suspended sample into a 2 Liter graduated cylinder and record total sample volume. 3. Measure 300 ml of sample into an aluminum can. 4. Analyze sample with Ge(Li) detector system. Seal on lid. Count for 4000 seconds. 5. When gamma analysis is completed and data is verified, return sam- ple to analytical laboratory. Procedure for 905. Analysis 1. Remove urine from aluminum can and pour into 2 liter beaxer. Rinse can and cover and add rinses to beaker. 22