tender for supply of equipment for polymer testing and polymer science lab in plastic department , list of item , compression set appratus • as per astm d 395 (method a) • plates : stainless steel, flat, parallel faces • spacers: guided on rods, control strain (e.g., 30 mm diameter, heights like 9.4 mm for specific strains) • specimen size: varies by standard; common are 13 mm or 29 mm diameter disks. • strain levels: achieved via spacers (e.g., 10%, 15%, 25% compression) • measurement: often uses a dial indicator (e.g., 50mm range, 0.01 mm precision) to measure final thickness / deflection. , tear strength tester • elmendorf type • as per astm d 192 • capacity of the tearing : 1600 g (can be increased to 3200 g or 6400 g by adding augmenting weights. • for thin samples weight range (gms) - 200, 400 and 800 also available (on demand) • tearing distance : 43 +/0.15 mm • reading of scale : 0 to 100% range • range of weights : range 1-1600, 3200, 6400 gms, range 2-200, 400, 800 gms • scale reading : 0 to 100% of range • accuracy : ± 2% within enire range. • least count of scale : 1% , water bath • thermostatic control system • 6-hole capacity • stainless steel double wall with leakproof construction • power - 220 v / 50hz, • heating - immersion heaters • holes dia. - 75 mm • temperature range - 5°c above ambient to 100°c • temperature sensitivity - ± 0. 5°c or better • temperature accuracy : ± 5°c , mechanical stirrer • size : 7 liters • impeller type : pitched fan • motor type : ac/dc 1/20 hp • stirring shaft length (mm) : 250 mm • speed range (rpm) : 800 - 4000 rpm • max. stirring capacity : 7 l • stirring shaft diameter : 6 mm • impeller diameter : 38 mm • fluid type : water , digital stopwatch • 1/100 sec precision timer • lap/split function • with alarm • 12/24 hour format • water - resistant