Supply of Chemicals and Instruments for 4.5 MGD Laboratory under Zone No. 05.

LABORATORY WATER PURIFICATION SYSTEM Type-2 grade water purification system The unit should purify water byReverse osmosis (RO) and Electrochemical Deionization (EDI) process Should comprise pretreatment cartridge, RO Module &EDI module. • System should able to handle feed water with following specifications • Conductivity : up to 2000 µS/cm • Free Chlorine : up to 3 ppm • Silt Density Index / Fouling Index : up to 12 • The pre-treatment cartridge should consist of activated carbon with silver impregnation, anti-scaling compound, and a 0.5 µmdepth filter to remove chlorine, oxidation agents, scalants and particles from the feed water. • RO module should consist of suitable polyamide RO membrane with rejection efficiency of 94% or higher, cut-off limit of ~200 daltons with provisions of automatic back flushing with RO permeate water. • System should have conductivity measurement before and after RO membrane for measurement & display of percentage rejection. • Should have a protection valve after RO to prevent water from entering EDI in case of RO malfunction. • There should be provision for either softener cartridge or any other inbuilt mechanism in EDI stack to prevent scale formation at cathode. • The EDI Stackshould consist of self-regenerating electro- deionization resin for removal of ions and organics from RO water. • Output water from the unit should be type-2 grade water with following technical specifications • Typical Resistivity :>5 MΩ.cm • Typical conductivity: <(><<)>0.2 µS/cm • Flow rate of output water ≥3 liters/hr. • The unit should have a display for coductivity of input and output water, rejection rate monitor, tank level, temperature Type-2 Water Storage tank : • The tank should have a storage capacity of 50 L or comptiable with complete housing and tubing. • Should have a tap for dispensing type 2 water. System Information : 1. Dimensions (H x W x D) mm H 470 x W 268 x D 339: (18.50 x 10.55 x 13.55 in 2. Net weight 12.3-14kg (32.95-37.51 lb) 3. Operating weight 17.218.5kg (46.8-49.57 lb) 4. Electrical feed voltage 100-230 V +/- 10% 5. Electrical feed frequency 50-60 Hz 6. Tap (feed) water connection 1/2" Gaz M 7. Tap (feed) water pressure 0.5-6 bar 8.Product flow rate : +/- 15%, 7 to 35 deg cel : 3 l/b

Murexide (ammonium purpurate) Cat No- 1.06161.0005, Pk -5 gm, Make - Siscochem/Glaxo/Merck

Ammonia buffer solution 500 ML Cat. No. 61759205001730, HSN Code 28334000 Make - Siscochem/Glaxo/Merck, Packing 500ml

Sulfuric acid 0.02N solution (N/50) Cat No-61846305001730, Pk-500 ml, Make - Siscochem/Glaxo/Merck

Campact Dry ready to use media petri plates for testing of E-Coil and colifoam Make- Tasha/Himedia/Supelco

Sodium hydroxide pellets SQ 500 gm Make - Siscochem/Glaxo/Merck

Methyl Orange indicator solution 250 ml Make - Siscochem/Glaxo/Merck

Universal indicator (PH) 100 ml Make Siscochem/Glaxo/Merck

Erichrome black –T 25gm Make Siscochem/Glaxo/Merck

EDTA solution N/50 Make Siscochem/Glaxo/Merck