The Biweekly demand is given in Exhibit-3, assuming all calendar days as working and lead time of 5days with service level of 95% the Reordering point is calculated. For safety stock evaluation on bi weekly basis, we take the Z-value on 99% i.e. 2.33. Below is the Reording point of safety stock on Biweekly and annual basis Griffin (Beaker) Erlenmeyer (Flask) 8 W 2W 1W 8W 2W 1W Avg Bi weekly 54.2 216. 433. 16.3 65.2 130.3 Demand 7 4 St. Dev 21.4 38.3 51 10.9 19.5 26 Service Level 99% 99% 99% 99% 99% 99% Lead time 5d Working days 365 ROP 19.4 77.4 154. 5.8 23.3 46.5 8 Z-Value 2.33 4