Bellstone Hi-Tech International manufactures Hand Operated Centrifuge Extractor. Bellstone Hi-Tech International is an ISO 9001:2000 certified company. The Company also manufactures various types of geotechnical equipments, laboratory research and scientific equipments, electrical and electronics instruments, oil and petroleum testing equipments, dairy and milk testing equipments, Pharmaceutical Testing Equipments etc. The Hand Operated Centrifuge Extractor is used for determination and checking of bitumen percentage in bituminous mix. This extractor has removable aluminium rotor bowl of capacity 1500 grams. This Centrifuge Extractor has a drain to collect dissolved bitumen coming out of the rotating bowl.