K-B Corer 20" Heavy SS with case

* For deep water over 100 meters * For fauna at water/bottom interfaces * Can be free-dropped up to 10 m (33’) * In medium or heavy-duty versions * Unrestricted flow, little bottom disturbance * Messenger closing for more control * Parts interchangeable with Wildco® corers This design incorporates improvements by Dr. R. O. Brinkhurst, Institute of Ocean Sciences, specifically for obtaining quantitative samples of fast-moving Tubificidae. Because the valve is locked open during descent, there is minimal frontal wave and minimal warning to fauna at the water/bottom interface. It is messenger-operated and is under your full control: you can keep the K-B® open until you are sure you have a sample. The heavy K-B® affords better penetration. Units are also available without carry cases. Specifications: Medium unitsweigh 7 kg (15 lb.) and include: * 316 stainless steel head assembly * 20” long 316 SS or clear PVC core tube * 45-B10 messenger, 61-B14 (100’) cable, carry case * Liner-type kits include: 2 nosepieces (2449-A11); 2 clear CAB liners with caps (2447-C21); 3 eggshell catchers (2449-B13) Heavy unitsweigh 16 kg (36 lb.) and include: * 316 stainless steel head assembly * 20” long 316 SS or clear PVC core tube * 45-B10 messenger, 61-B14 (100’) cable, carry case * Liner-type kits include: 2 nosepieces (2449-A11); 2 clear CAB liners with caps (2447-C21); 3 eggshell catchers (2449-B13)