supply of portable ph meter & graduated measuring cylinder, capacity - 50 ml, made of borosilicate glass & low form beaker with spout 1000ml, accepted make/ brand: borosil/jsil/rasayan/isko/belloportable ph meter & graduated measuring cylinder, capacity - 50 ml, made of borosilicate glass & low form beaker with spout 1000ml, accepted make/ brand: borosil/jsil/rasayan/isko/bello,portable ph meter (multi parameter, ph optional tds, conductivity salinity/temp erature) 0-14 ph. the equipment should have calibration certificate and warranty for minim um one year. accepted make/brand:tmp8 [ warranty period: 12 months after the date of delivery ] ] , graduated measuring cylinder, capacity - 50 ml, made of borosilicate glass [ warranty peri od: 30 months after the date of delivery ] ] , low form beaker with spout 1000ml, accepted make/ brand: borosil/jsil/rasayan/isko/bello [ warranty period: 30 months after the date of delivery ] ]