P. L. Tandon & Co. Offers Double Walled Vacuum Oven. P. L. Tandon & Co. Is an ISO 9001 2000 certified co. That manufactures laboratory instruments. The Double Walled Vacuum Oven features S.S. Made inner chamber and mild steel made out chamber. It has a temperature range 50 deg C to 150 deg C and accuracy &plsmn; 2 deg C. It can withstand a vacuum of 76 cm. This Double Walled Vacuum Oven incorporates temperature regulator indicator lamps and On/Off Switch. This vacuum oven is suitable for 220 Volts AC.