supply of water soluble polymer quench oil , water soluble polymer quench oil ilo quench 700 aqua of castrol make or equivalent shall have following properties. i) typical characteristics of product. a) density at 15 deg c : 1032 to 1040 kg/m3. b)ph distilled water (15%) to be 9.0 to 9.7. c ) reffractive index to be 1.36 to 1.42. d) appearance to be viscous cloudy, e) color to be clear yellow. ii) typical operating conditions: 1) concentration in dm water of tds below 100 ppm & chlorides below 40 ppm to be 10% 2) bath tem perature : 25 to 55 deg c. special conditions: i) the supplier should give certificate to the effect that t he product offered is ilo 700 aqua of castrol make or equivalent. the refractive index after mixing sh all not vary more than 2% on environmental issues. ii) five axles shall be quenched in dm water with 10% of polymer oil for 30 minutes duration at a bath temperature below 55 deg.c. the mechanical pro perties at mid radius of axle length should meet the requirements specified at clause 7.2,7.4 of irs r4 3/1992 specification and micro structure should reveal fine pearlite structure. ]