supply, installation, testing, commissioning and demonstration of the laboratory equipment

Heat Transfer Through Composite Wall Apparatus Slab assembly arranged symmetrically on both sides of heater. Slabs: Cast Iron 250 mm dia. × 20 mm; Bakelite 250 mm dia. × 15 mm; Press Wood 250 mm dia. × 12 mm. Nichrome heater; PID controller up to 200°C; digital energy/power meter; minimum 8 RTD Pt-100 sensors; multi-channel digital temperature indicator; dimmerstat 0–2 A or suitable; voltmeter 0–250 V; ammeter 0–3 A; cabinet with glass/acrylic viewing window; anti-vibration support; rigid PU/powder-coated structure; 230 V ±10%, 50 Hz, single phase; complete with manual and accessories.

Stefan–Boltzmann Apparatus Copper hemisphere 200 mm dia. or better; SS jacket 250 mm dia. or better; copper test disc approx. 20 mm dia. × 1.5 mm; SS water tank approx. 12 L with immersion heater; minimum 2 RTD Pt-100 sensors; PID temperature controller and multi-channel digital indicator; electrical protection; anti-vibration table with powder-coated structure; complete with manual and accessories.

Forced Draft Tray Dryer Double-walled insulated drying chamber, inner chamber preferably SS 304; removable tray(s); ambient to at least 120°C; finned/nichrome heater; variable airflow blower with suitable airflow measurement; PID temperature control; RTD Pt-100/K-type sensors; electronic balance/load-cell 0–1000 g or higher, resolution 0.1 g or better; dry/wet bulb or equivalent humidity measurement; control panel with blower/heater control and over-temperature protection; 230 V ±10%, 50 Hz, single phase; complete with accessories.

Natural Convection Heat Transfer Apparatus Vertical brass/SS test pipe approx. 38–40 mm OD and 400–500 mm length; internal 200–400 W heater with variable power control; transparent draft shield/duct approx. 200 × 200 × 800 mm or suitable equivalent; minimum 6 surface sensors plus ambient temperature measurement; RTD Pt-100/K-type sensors; multi-channel indicator; voltmeter, ammeter or power meter; rigid powder-coated frame; complete with accessories.

Thermal Conductivity of Metal Rod Apparatus Uniform copper/brass/aluminium rod, length 500 mm or more, dia. 20–30 mm; heater at one end and water cooling at other; minimum 4 temperature points (6 preferred) using RTD/thermocouples; digital multi-channel indicator accuracy ±0.5°C or better; variable heater power; voltmeter/ammeter or power meter; proper insulation; 230 V AC; complete with cooling connections, tubing, manual and accessories

Ion Exchange Unit Two columns (cation and anion) of borosilicate glass/Perspex or corrosion-resistant material; approx. 50–55 mm dia. and 500 mm length or suitable equivalent; SS feed tank 20–25 L; diaphragm/peristaltic pump; rotameter approx. 10–100 mL/min or suitable; digital conductivity meter; strongly acidic cation and strongly basic anion resins sufficient for initial charging; provision for service, regeneration/rinsing and backwash; 230 V AC where applicable; complete with tubing, valves and accessories.

Vapour–Liquid Equilibrium (VLE) Apparatus Borosilicate equilibrium still with reboiler, condenser, equilibrium/separation section, condensate arrangement and sampling ports for vapour condensate and liquid phases; reboiler approx. 1 L; 500–1000 W heater with variable control; temperature measurement 0–150°C, accuracy ±0.5°C or better; water-cooled condenser; corrosion-resistant wetted parts; control panel with safety features; rigid powder-coated frame; complete with glassware, supports, hoses and accessories.

Laboratory Hammer Mill Robust MS/SS body; high-speed rotor with hardened-steel hammers in guarded chamber; motor approx. 1–3 HP, variable speed preferred; bidder to state throughput, speed and maximum feed size; guarded hopper and product collection; minimum three interchangeable screens; dust-minimizing arrangement; safety guards/interlock and overload protection; sturdy vibration-resistant frame; 230 V single phase or 415 V three phase, 50 Hz, clearly stated; complete with controls, tools and manual.

Time Constant of Thermocouple and Thermometer Apparatus Hot-water bath approx. 5–10 L with 1–2 kW heater and PID controller up to 100°C, accuracy ±1°C or better; cold/ambient bath; sensor holding arrangement; K-type thermocouple with digital indicator 0–200°C or better, resolution 0.1°C; spirit-filled thermometer preferred, approx. 0–110°C, least count 1°C; stopwatch resolution 0.01 s or equivalent; insulated vessels, powder-coated frame, electrical protection; complete with manual, experimental procedure and calibration/test certificate where applicable.