Labtop Instruments Pvt. Ltd. Manufactures Constant Temperature Bath with Audio Visual Alarm. Labtop Instruments Pvt. Ltd. Has received ISO 9001:2000 certifications. Labtop Instruments Pvt. Ltd. Supplies blood bank equipment, blood bank instruments, blood bank refrigerator, laboratory instruments and other scientific instruments. Constant Temperature Bath with Audio Visual Alarm is designed for research work at desired temperature with high accuracy. Constant Temperature Bath with Audio Visual Alarm is used to control temperature with an accuracy of 0.2 C. The unit is provided with a circulating pump to ensure uniform temperature.