Presto Stantest Private Limited manufactures Pneumatic Model Laboratory Heat Sealer with Adjustable Force. Presto Stantest Private Limited is an ISO 9001:2000 certified company. The Pneumatic Model Laboratory Heat Sealer with Adjustable Force ranges from 15 to 180 kg with adjustable temperature. It is available with microprocessor based digital display and it incorporates two jaws which can be heated separately at various temperatures. It is provided with Special Imported P.I.D. Logic Temperature Controller ensuring highest levels of control and repeatability.