Addendum No. 0 TENDER FOR SUPPLY, DELIVERY, INSTALLATION AND COMMISSIONING OF EQUIPMENT FOR LATEX TECHNOLOGY LABORATORY OF FACULTY OF ANIMAL SCIENCE AND EXPORT AGRICULTURE Tender No - UWU/B/C/6/09 Date and Time of Pre Bid Meeting November 22, 206 at 0.00 a.m Venue Board Room Present: Bidders Mr. Prasad Jayaweera, Representative of M/s Analytical Instrument (Bidder) Mr. G.A Chathuranga, Representative of M/s Quoliken (Bidder) Mr. B. Hariharan, Representative of M/s Hemson International (Pte) Ltd (Bidder) At the Pre Bid Meeting following clarification were made against the bidders questions. a. Changes in specifications - Specifications of following items were change at the Pre Bid Meeting (Refer annexure for new specification). Item No. Item Reference Annexure Aging Oven/ Hot Air Oven 2 Top Loading Balance 3 Magnetic Stirrer with heating facility 4 Analytical Balance 4 ph Meter 5 Fume Cupboard Annexure 0 8 Muffle Furnace 9 Scientific Refrigerator 20 Water Bath 2 Freezer 22 Overhead Stirrer Chairman Procurement Committee Uva Wellassa University Page of 6
Annexure 0 TECHNICAL SPECIFICATIONS SUPPLY, DELIVERY, INSTALLATION AND COMMISSIONING OF EQUIPMENT FOR LATEX TECHNOLOGY LABORATORY OF FACULTY OF ANIMAL SCIENCE AND EXPORT AGRICULTURE Item No. Item Specification Qty Aging Oven/ Hot Air Oven Working Chamber Capacity: 50 Liters Temperature Range : Room Temp. to 300 0 C Temperature Fluctuation : +/- 0 C Should be able to set the working temperature randomly Digital Display Should be able to use for applications of ageing and heat tests of rubber and plastics Should work According to ISO 88 Standard 230V/50Hz Bidder Response Yes No 2 3 4 Top Loading Balance Magnetic Stirrer with heating facility Analytical Balance Capacity 600 g (Max) Readability 0.00 g Verification intervals 0.0 g Pan Size 20 x 40 mm or more External calibration and internal calibration, need to supply calibration kit (E2) with certification Display LCD large Level display (Mercury) Additional Accessories (Rechargeable Battery, Density measurement kit, etc.) Voltage 220-230 V and 50-60 Hz Temperature up to 280 C Electronic speed control with max speed of 500 rpm Stainless steel with ceramic coated hotplate Quick heat-up times Chemical-resistant and scratchproof External temperature sensor LED display temperature and speed. Need to supply magnetic bars Capacity 0 to 220 g Readability 0. mg Pan Size 80 mm or more Internal and External Calibration, need to supply calibration kit (E2) with certification Display LCD Additional Accessories (Rechargeable Battery, Density measurement kit, etc.) Just plug and play or specify the warm up time Voltage 220-230 V and 50-60 Hz Closed transparent doors Page 2 of 6
5 Viscometer To measure the viscosity of Natural Rubber Latex Measurement Range : to 2,000,000 cp Display of Speed, Spindle, Absolute Viscosity Readings, Shear Stress/Rates and Scale Readings. Should be able to store test methods in memory and recall the test method need whenever required Touch Key Pad Operation Ability to give readings of kinematic and apparent viscosity also Audio and visual alarms for malfunctions USB Interface to transfer data to a computer Voltage 230 V/50 Hz Supply should include Spindles, Spindle Guard, Stand, Software, USB Cable, Power Cord, Operational Manual and Carrying Bag Viscosity Standard 500 ml with a shelf life at least one year should essentially supply with the viscometer 6 Mechanical Stability Testing Machine Should conforms to corresponding BS ISO and ASTM Standards for Testing of Natural Rubber Latex Should maintain a speed > 4000 rpm continuously Digital display of speed and time Adjustable table heightcoloured LEDs for visual confirmation Installation/Commissioning and Training230-240V/50 Hz 7 Mooney Viscometer To Test the Viscosity of Raw and Compounded Natural Rubber/Polymers Should be able to measure Stress Relaxation test at the end of Mooney Viscosity Test. Automatic balance and calibration Temperature : Usable range -: Ambient 30 C to 200 C Calibrated Range -: 00 C to 200 C Units : Temperature in 0 C, Viscosity in Mooney Units Long Life Seal for longer working life Rotor Speed 2 rpm Sample Volume : 25 cm3 Printed Data Points : Viscosity at specified times Scorch Test -: Initial Viscosity, Minimum Viscosity, Scorch Times (t5, t35) or (t3, t8), Die Temperature at the end of test Graphic Output : Upper/Lower Die Temperatures, Mooney Viscosity, Stress Relaxation, Scorch etc. Computer and Operational Software Operational Manual Should come as plug and play unit with all essential items for operation 240 V/50 Hz Page 3 of 6
8 Stereo Microscope 9 Thickness Gauge 0 Glass Capillary Viscometer (Ubbelhode Viscometer) Metrolac 2 Hydrometer 3 Plastimeter Binocular head, inclined 30 and rotatable 360 Diopter adjustment on both eyepieces Eyepieces - Wide field 0 X/20 mm with extra WF 5 X/6 mm, 20 X/2 mm and with eye piece micro meter Should be with range of magnification from X, 0 X, 50 X and upgradable to Maximum magnification of 200 X Lenses and objectives-antifungal treated, Lead freestage should fit with white diffusing disc for transmitted light and Specimen clamps Good in Focusing Illumination should be high intensity LED or BetterLight intensity control using a knob on the basevoltage 240 V, 50/60 HzWorking distance-00 mm For thickness measurements using constant pressure method Should complies with Tensile Standards BS 903 and Compression Standards ISO 85 Digital Display Base > 40 mm for placement of the test piece Facility for easy location test piece Indicator Travel > 24.5 Resolution : 0.0 mm Specimen Cutting Dies and Press Thickness Gauge should come with required anvils, weight/s, specimen preparation press and dies Need to measure the kinematic viscosity of Natural Rubber dissolves in organic solvents Filling volume 0-20 ml, measurement accuracy 99.9 %, Stop watch and clear glass made Should be able to measure 20 % to 40 % Dry rubber content (DRC) in Natural Rubber Latex with 99.9 % accuracy 2 Glass made measuring range 0.-.5 specific gravity at 25 0 C with accuracy of 99.9 % 2 To measure the Initial Plasticity and Plasticity Retentions Index of Unvulcanised Natural Rubber and Compounds. Should comply with BS 903, ISO 2007 and ASTM D394 Platen Temp. : > 00 0 C Three Upper Platens of dia. 0- mm, 6.5-7.3 mm and 3.5 4 mm Lower Platen > 5.5 mm diameter. Instrument should come with one of the upper platens (provided) fitted Compressive Load > 95 N Should provide instructions on the LCD to carry out calibration by the operator Automatic Start of Testing Process with the rotation of handle 230 V/50 Hz Hand Operated Specimen Cutter should come with the Instrument 2 Page 4 of 6
4 ph Meter 5 Fume Cupboard 6 7 Heating Mental (250 ml) Heating Mental (000ml) 8 Muffle Furnace 9 Scientific Refrigerator 20 Water Bath Should able to measure ph of rubber latex Portable type Automatic buffer recognition Real Time Memory - Able to record up to 99 data memory with date and time ph range 0 to 4 ph Accuracy ±0.0 ph At least 3 point to selectable calibration Operating voltage 9 to 2 V DC, min 650 ma Working temperature range 5 to 40 C Need to supply standard buffer solutions for calibration at ph of 4, 7 and 0 Internal work are at least 000 x 000 x 000 in L x H x W (mm) Exhaust duct for one storey Blower-Centrifugal (non-corroded) fan, speed adjustable, set inside the fume hood Glass window -Two layer toughen glass, Height of door should adjustable Power supply- 220 V / 50 Hz Power 800 W 400 W Chemical proof interior for conc. Acids and bases Should have a light water supply, sink and gas supply inside Heating Mantle is in round shape Inside made of fiberglass yarn High-density glass wool insulation Volume 250 ml Maximum operation temperature 0 to 450 C Voltage Supply 220 V Power 350 W Infinite temperature controller within the range Heating Mantle is round in shape Inside made of fiberglass yarn High-density glass wool insulation Volume 000 ml Maximum operation temperature 0 to 450 C Voltage Supply 220 V Power 350 W Infinite temperature controller within the range Max. Temperature - 200 C (< 2 hours) Capacity minimum 0 Liters Working Temperature 00 to 200 C Temperature Control-infinite from ambient to 200 C Furnace Structure-double shell with fan cooling High heating Rate and good insulation Temperature Accuracy-± C, Need to have exhaust system Total useful volume - 500 Liters, Voltage - 220 V/50 Hz Temperature inside the box - 2~8 C Digital display, alarm system and need racks inside Digital display Temperature range from ambient to 00 ±0.5 C Power:.5 kw, quality stainless steel material Double-row Six-hole with concentric rings, Approximately 20 liters of chamber volume Page 5 of 6
2 Freezer 22 Overhead Stirrer Upright Temperature range from (-25 C to 0 C) Infinitely adjustable between (-25 C to 0 C) Good insulation CFC-free Completely automatic, thermostat controlled defrosting Gross 400 Liters Capacity Internal Light Single door (not glass) 4 open wire shelves rust proof shelf loading capacity 20 kg Microprocessor controlled Voltage 220-230 V, Single, 50-60 Hz Input Power -80 W Output Power -20 W Rated Torque - 0.52 Nm Range of Speed : 60 to 2,000 rpm Spin Chuck Maximum torque-50 Ncm Max Capacity (H2O) - 20,000 ml (20 Liters) Ambient temperature - 40 C Relative humidity - 90 % Power Supply -AC 220 V, 50 Hz Stainless steel spindle for rubber latex mixing Need to provide stand and bushes Page 6 of 6