Providing and fitting fixing of Laboratory Instruments including providing of Glassware, Chemical and other accessories for favour of DWS Sub-Division, Sabroom under DWS Division, Sabroom, South Tripura during the year 2024-25.

Amount

Supply of following Glasswares as per Direction of Engineer-In-Charge.

Supply of one Packet Micropipette Tips compatible with pipette of Volume(100-1000 µl).

Supply of Micropipette with Variable Volume(100-1000 µl). With increment 1µl.

Supply of Micropipette with Variable Volume (1 – 10 ml). With increment 1ml.

Supply of one Packet Micropipette Tips compatible with pipette of Volume(1 – 10 ml).

Supply of Pipette with Work Certificate, should Complies with IS, EN ISO 835, Should be supplied with individual calibration certificate showing actual volume dispensed and providing traceability to national standards (Capacity 10 ml):

Supply of Pipette with Work Certificate, should Complies with IS, EN ISO 835, Should be supplied with individual calibration certificate showing actual volume dispensed and providing traceability to national standards (Capacity 5 ml):

Supply of Pipette with Work Certificate, should Complies with IS, EN ISO 835, Should be supplied with individual calibration certificate showing actual volume dispensed and providing traceability to national standards (Capacity 2 ml):

Supply of Pipette with Work Certificate, should Complies with IS, EN ISO 835, Should be supplied with individual calibration certificate showing actual volume dispensed and providing traceability to national standards (Capacity 1 ml):

Supply of Test tube with rim and round bottom, complies with IS 2018, ISO / DIN 4142, made from heat resistant, low expansion Borosilicate Glass (Capacity 27 ml) (OD x length: 18 x 150 mm):

Supply of Beaker, with low form, with graduation and Spout, made from Heat resistant, Low expansion Borosilicate Glass (capacity 500 ml)

Supply of Glass made Double Distillation Plant with Metal Heater, ‘O’ Ring Type Condenser Fixing arrangement, Horizontal Type, Made from Heat Resistant, Low Expansion Borosilicate Glass. Double stage with Auto cut-off for low water level. Capacity 1.5 liters per hour output:

Supply of Durham Tube, without rim, Made from Heat Resistant, Low Expansion Borosilicate Glass (Capacity: 1 ml)

Instruments-

Supply of Bacteriological Incubator 37°C Thermostatic. The unit should be double walled unit with outer body made of mild steel sheet treated for degreasing & rust proofing duly powder coated and inner chamber made of stainless Steel (304 Grade) sheet. Should be provided with adjustable Stainless Steel Wire Mesh / perforated shelves. The space between inner chamber and outer wall should be filled with high grade mineral wool for minimal heat loss. The Double Walled Door should be fitted with glass window to facilitate viewing inside chamber without disturbing the inner temperature and has synthetic rubber/ fiber gasket. Unit should have ventilation slides on two sides to control inner air/ vapor circulation. Should be fitted with beaded heating elements placed in ribs, at bottom and sides for uniform heat distribution. Unit should be fitted with ON / OFF switch. To work on 220/230 volts AC supply. Should be fitted with Fan for uniform heat distribution within the chamber. Unit should be fitted with capillary thermostat for temperature control from +5º C ambient to 70ºC, ± 1ºC at 50ºC. Size 450 x 450 x 600 mm (18”x18”x24”).

Supply of Sterilizer (Autoclave) with outer chamber made of heavy gauge Stainless Steel Sheet duly polished. The inner chamber is made of thick 304 Grade Stainless Steel Sheet. Lid is made of thick machined high grade Stainless Steel plate. The unit has Radial Locking arrangement made of high grade SS duly polished with paddle lifting mechanism. Unit is provided with Spring Loaded Safety Valve, Pressure Gauge, Pressure Release Valve, Water Level Indicator & Drain Valve. Unit is hydraulically tested to withstand upto 40 psi pressure. All internal joints are Argon arc welded, ground and polished to give crevice free internals. Molded joint-less Silicon Rubber Gasket is provided for leak proofing. The unit is electrically heated by flange type/immersion type heaters. Supplied with Control Box, fitted with Mains & Heating Indicators, ON / OFF Switch, Cord & Plug to work on 220/230V, 50Hz, AC supply. Maximum pressure of the steam 15 lbs/sq inch The autoclave should be supplied complete with 2.0 KW immersion heater.

Supply of Digital pH meter, Auto temperature compensation probe, integral electrode holder and 100/240 VAC power pack, startup calibration buffer solutions (pH 4.0, 7.0 and 10.0), Range 0.00 to 14.00 pH, Resolution 0.01 pH, Accuracy ±0.01 pH:

Supply of Digital weighing balance of capacity 220 gm, Readability: 0.1 mg, Internal Calibration, Air shield

Supply of Bacteriological Incubator 37°C Thermostatic. The unit should be double walled unit with outer body made of mild steel sheet treated for degreasing & rust proofing duly powder coated and inner chamber made of stainless Steel (304 Grade) sheet. Should be provided with adjustable Stainless Steel Wire Mesh / perforated shelves. The space between inner chamber and outer wall should be filled with high grade mineral wool for minimal heat loss. The Double Walled Door should be fitted with glass window to facilitate viewing inside chamber without disturbing the inner temperature and has synthetic rubber/ fiber gasket. Unit should have ventilation slides on two sides to control inner air/ vapor circulation. Should be fitted with beaded heating elements placed in ribs, at bottom and sides for uniform heat distribution. Unit should be fitted with ON / OFF switch. To work on 220/230 volts AC supply. Should be fitted with Fan for uniform heat distribution within the chamber. Unit should be fitted with capillary thermostat for temperature control from +5º C ambient to 70ºC, ± 1ºC at 50ºC. Size 450 x 450 x 600 mm (18”x18”x24”).

Supply of Biological Microscope. Stand: Sturdy stand with antirust, antibacterial materials. Heat isolating hand rests, Viewing Bodies: 45° inclined, 360° rotatable dovetail, Inter pupillary distance 54 -74mm, Eyepiece: Wide field focusable paired eyepieces 10x/18mm with foldable eye guard, lockable antifungal, Nosepiece: Quadruple Nosepiece (Ball bearing type) with rubber grip, click stop for exact position, Objectives: LP series DIN Semi Plan Achromatic objectives 4x,10x, 40x (spring loaded), 100x (spring loaded, oil), anti-fungal, Mechanical stage: Rectangular stage size 135 x 124mm, X/Y travel range 76mm x 50mm, low drive movement controls, single specimen holder, Condenser: Sub stage Abbe condenser NA 1.25 with aspheric lens, iris diaphragm with snap-in blue filter. Rack and pinion movements on metal guides, Focusing: Co-axial coarse and fine focusing on ball drive system for smooth operation, fine drive movement 0.2mm/division, tension adjustment for torque control, Illumination: LED* or Halogen 6V-20W illumination with variable illumination control. Up to 100,000 hours of LED life and 2,000 hours of Halogen lamp life, Electricals: Universal input 110V/ 220V AC, 50/60Hz. Built in voltage stabilizer:

Supply of Glass made Double Distillation Plant with Metal Heater, ‘O’ Ring Type Condenser Fixing arrangement, Horizontal Type, Made from Heat Resistant, Low Expansion Borosilicate Glass. Double stage with Auto cut-off for low water level. Capacity 1.5 liters per hour output:

Supply of Digital Colony Counter: Unit should be fitted with automatic 4 digits LED Digital Display. The Counting plate should be fitted with illuminated standard wolfhugel ruling to ensure clarity in differentiated and sharply defined colonies. Each touch of marking pencil in the digitis should increase the colony count by '1' and the LED Display depicts the total colony count. Maximum colony count possible should be upto 9999. Should beprovided with a manual reset of digital display, ON/OFF Switch, counting plate, 100 m.m.dia lens, cord and plug. To work on 220 V.AC.

Chemicals:

Turbidity Standard Solution 1000 NTU (500 ml)

pH Standard Solution (7) (500 ml)

pH Standard Solution (4) (500 ml)

pH Standard Solution (9.2) (500 ml)

Conductivity Standard Solution 1.41ms/cm (500 ml)

Total Dissolve Solids Solution (1000 ppm) (1413 us/cm) (500 ml)

Iron Standard Solution (1000 ppm) (500 ml)

Color Standard Solution(Platinum Cobalt Colour Reference)-500 Hazen (500 ml)

Ethyl alcohol (90% ) (4L=1unit)

Mac Conkey broth (500 gm=1unit)