NIT No. 20(25-26)/CWA(WnS)II/Item No. 01

Select, Excess (+), Less (-)

Tender Inviting Authority: Chief Water Analyst (W&S)-II

Name of Work: Procurement of Turbidity Meters for Quality Control Laboratories running under CWA(W&S)-II Division.

NIT No.- 20 (2025-26) Item No. 01.

Sl. No. Item Description Item Code / Make Quantity Units Applicbale % of Basic Rate (on which Service Tax will be calculated) Applicbale % of Basic Rate(on which GST will be calculated) Addition / Deduction Addition / Deduction Values Currency Convertion against each Item Quoted Currency in INR / Other Currency BASIC RATE In Figures To be entered by the Bidder Rs. P GST in % Service Tax in % GST Amount in INR Service Amount in INR Total Unit Price in INR

1.01 Portable Turbidity Meter Model: 2100Q Technical Specification of Portable Turbidity Meter Make: HACH/WTW/Merck/Thermo Fisher or any other DJB Approved make Technical Specification of of Portable Turbidity Meter must have ratio turbidimetric determination using a primary nephelometric light scatter signal 90° to the transmitted light scatter signal meets EPA & ISO 7027 certified as follows: Measurement Specifications: Measurement Principal: Ratio turbidimetric determination using a primary nephelometric light scatter signal 90° to the transmitted light scatter signal. Measurement Range: 0 to 1000 NTU (FNU) Accuracy: ±2% of reading plus stray light from 0 to 1000 NTU Repeatability: ±1% of reading, or 0.01 NTU (FNU), whichever is greater Resolution: 0.01 NTU (lowest range) Compliance: EPA Method 180.1 & ISO 7027 Stray Light: less than 0.02 NTU Signal Averaging: Selectable on/off Detector: Silicon photovoltaic Light Source: Tungsten filament lamp Reading Modes (user selectable options): Normal (Push to Read),Signal Averaging, Rapidly Settling Turbidity Rapidly Settling Turbidity (RST) Mode: for improved measurement of unstable & settling samples. Dual Detector Optical System: for light fluctuation, compensates of color & stray light interference, On-Screen assisted Calibration and Verification: to minimize operator error. All the core measurement information is on a single screen. Data Logging Capacity: 500 records or better with date, time & calibration status Mechanical & Operational Requirements Power Supply: 4 AA alkaline batteries & AC Power with USB port Operating Temperature: 0 to 50°C Storage Temperature : -40 to 60°C Instrument Enclosure Rating: IP67 Protection Class: Power Supply: Class II Certification: CE certified Sample Volume: 15 mL or better Sample Cells : 60 x 25 mm round glass with screw cap 3. Accessories to be supplied: carrying case with calibration standards in 1" sealed vials of 20, 100, 800 NTU), 6 sample glass round cells with screw-tops, instrument manual, silicone oil and oiling cloth Warranty : The instrument shall be supplied with a minimum one year comprehensive warranty from the date of installation. item1 Nos. Excess(+) Full Conversion INR

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