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Exhibit-31 is the office copy of the covering letter addressed to the Director, Forensic Science Laboratory, Kalina. It shows the endorsement and signature of the officer from the Forensic Science Laboratory, Kalina to show that the sealed envelope was received by that office on the same day.

21. Below test memo exhibit-32 sent to the Deputy Chief Chemist, there is a report from the Chemical Examiner which shows that, the sample was in the form of brown powder and tested for diacetyl-morphine (heroin), which is covered under the NDPS Act. CA report from Forensic Science Laboratory, Kalina also shows that one sealed envelope with seals intact and as per copy was received. It contained brown coloured powder in a polythene bag in an envelope and marked "BK BL II". The result of the analysis was that heroin (diacetyl-morphine) was detected in the exhibit along with the other opium alkaloids. Director of Forensic Science Laboratory also reported that the sample contained 44% of heroin. P.W.4 Murlidhar Sevalkar, who was the Assistant Chemical Analyser at Forensic Science Laboratory, Kalina, Mumbai MP 15 Apeal1297_07.doc during the relevant time, deposed about the receipt of the sample with intact seals and also about the analysis of the sample. He has also given the data of the analysis in his evidence before the Court and deposed that the sample contained 44% heroin (diacetyl-morphine) along with paracetamol and caffeine. The data sheet exhibit-57 and the report exhibit-33 were proved by him.