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For measurements of pH values of homogeneous electrolytic solutions. Supplied with glass combination type of electrode, electrode stand & pH buffer solutions of 4 & 7 pH. The buffer solutions help in easy re-calibration of the pH meter. Standardization (7 pH) and slope (4 pH) adjustment controls are provided on the front panel. Detachable electrode ensures replacement convenience. Self check facility control on front panel enables users to ensure that the pH meter is functioning properly. Temperature setting on front panel provides compensation for different temperatures of solutions.

• pH Range: 0 to 14.00 with resolution of 0.01 pH
• Milli Volt Range: 0 to ± 1999 milli volts DC with resolution of 1 mV. pH or milli volt measurement selection is provided with a front panel control.
• Accuracy: ± 0.04 pH for pH measurements, ± 2 for mV measurements
• Temperature Compensation: 0 °C to 100 °C, settable with continuously adjustable front panel control.
• Self Check Facility: Available with front panel control. Displays read 7.00 ± 0.02 pH to indicate proper functioning of the pH meter.
• Re-Calibration: Front panel preset control of STANDARDIZATION enables calibration of 7 pH. Front panel preset control of SLOPE enables calibration of 4 pH. Buffer solutions of 4 & 7 pH are supplied with the pH meter to re-calibrate the pH meter.
• Display: 3½ digit, 7 segment, bright LED type of 12.5 mm height. Decimal point, over-range and negative polarity indications are provided.
• Power Requirements: 230 ± 10% V AC, 50/60 Hertz, 5 VA
• Standard Accessories: Glass combination type of pH electrode, electrode stand, buffer solutions of 4 & 7 pH and instructions manual.

This Instrument is design to demonstrate the method to transmit signals via. Electromagnetic transmission and to study the Phase Shift Keying Modulation and Demodulation. Whole instrument is placed in plastic moulded box and 2 mm banana plug leads are provided for modulation and demodulation connections.

Technical Specification:-
1. Fixed Output DC Regulated Power Supplies of ±12 V and ±5 V.
2. Built in Carrier wave Generator (Sine Wave) of 5 Vpp, 22 KHz ± 5% Frequency range with output on sockets.
3. Built in Data Generator using IC 7490 with four modulating signal outputs on sockets.
4. IC TL084 & IC 7486 are using for PSK demodulator.
5. Circuit diagram is printed on the milky white top panel and important connections are brought out on the sockets.

For measuring and analysing gas given off by plants.Comprises a 1 mm bore capillary tube graduated 0-10 cm in mms and connected to two 2 ml syringes. The gas can be drawn along the capillary by one syringe and collected into he other for analysis, mounted on board.

Consists of: 1. Eight Plano-convex lens fl 500 mm, 1 Plano convex lens of fl 150 mm. 2. Twelve lens holders. 3. Four plates of different apertures, 32, 22, 11 and 5.5 mm diameter resp. 4.Three plates with small holes in circles of 29, 22, 10 mm diameter 5. One plate with circular aperture of 5.5 mm diameter 6. Four multi-aperture plates. 7. Four stop plates. 8. Two slide holders. 9. Six translucent screens. 10. Ten white cards. 11. Four Eye-pieces. 12. Fifteen each Red, Green and Blue filters. 13. Forty Black cards with holes. 14. Forty razor blades. 15. 120 Rubber bands. 16. One piece black chiffon for diffraction effects.

Made of polypropylene, this Pipette Box is designed in such a way that it can hold pipettes of different lengths. The top of the box screws on the bottom and the height can be adjusted by screwing or unscrewing the top.