equipment , purchase of 1 no. of ph/ec/do multiparameter portable, senior rotary microtome and digital ph , ph/ec/do multiparameter portable specifications: 1. ph-0.00 to 14.00 ph / ± 600.0 mv 2. orp- ± 2000.0 mv 3. ec- 0 to 200 ms / cm 4. tds- 0.0 to 400.0 ppt 5. resistivity- 0 to 999999 ohms.cm ; 0 to 1000.0kohms.cmc 0 to 1.0000 mohms.cm 6. salinity -0.00 to 70.00 psu 7. seawater- 0.0 to 50.0 8. do - 0.0 500.0 % 0.00 to 50.00 ppm ( mg / l ) 9. amospheric pressure- 450 to 850 mm hg temprature - -5.00 to 55.00 ° c 23.00 to 131.00 ° f . 268 15 to 328 1 , senior rotary microtome feed adjustment:1-50microns(instep of 1 micron each) opening of object clamp (balland flange type): 37 x 27mm total feed excursion: 28mmoverall size:16x10x9 and approx. weight 27kg - special features: - 1.surface grinding on base, horizontal vertical and inclined slide for smooth and accurate motion. 2. ratchet wheel, cam and cam weight are made of gun metal. 3. axel and catcher made from special steel made om imported machine. standard accessories: - * 120mm razor with back and handle in case - 1 * object holder dia 22,25,28mm -3 *knife holder tightening key - 1 * dust cover and oil cane for lubrication -1 the microtome is furnished in epoxy finished and complete with all above accessories , digital ph meter ph range : 0 to14 resolution :0.01, accuracy : +/-0.01 repeatability: +/-0.01, stability : +/- 0.05in 8 hours emf inmv, range : +/-1999, resolution :1, accuracy : +/- 0.1%of full scale or +/-2, repeatability: +/-1 input impedance:>10(12) ohm @25deg.c.- receptacle: bnc assay potential correction : +/- 100 mv with 1 turn potentiometer, temp. compensation: 0 to100c , manual readout : 31/2 digit 7segment, led of 12.7mm height with polarity, indication. power requirement:230v +/-10%, 50hz,1 max.15va physical dimension: