ture two-channel independent operation for measurements from 0.056 to 2OWOO microSiemens/cm with display parame- ters of % passage, % rejection, differ- ence, conductivity, resistivity, and total dissolved solids.

Circle 415 on the reader service card

Polyethylene Heat Exchangers George Fischer Inc. Tustin, Calif.

George Fischer Inc. announces the addition of Calorplast polyethylene immersion heat exchangers to their product line. Polyethylene can be used

for temperatures from -40 to 160°F making it ideal for metal-finishing ap- plications requiring cooling of corro- sive liquids such as aluminum anodiz- ing. It transfers twice as much heat as other plastic materials, providing a large heat transfer surface in a compact configuration.

Circle 416 on the reader service card

DARACLEAN” AQUEOUS CLEANERS......

. . . . . Use Rejscticn Chemistry tc extend bath life, reduce chemical consumption and minimize waste

QUALITY INNOVATION SERVICE --

AII DARACLEANT~~~~~~~ cleaner q re formulated with health, wfew and the enw0nment in mind.

Darei W. R Grace & Co:Corm

6000 w. 51st street Chicago. IL 60638 Fax: 706 563.1735

800.232.6411

Rust-Preventive Finish Hubbard-Hall Inc. Waterbury Conn.

MetalGuard 6X0 is a water-based, polymeric rust-preventive with low VOC designed to impart a uniform, black matte finish on all metals. It can be used over bare metal or as a sealer and final finish directly after heat treat, black oxide, or phosphate conversion coating. It can be dip-applied by rack or barrel instead of spraying and is extremely easy to use and maintain. The coating dries to a hard, abrasion- and mar-resistant finish

in about 15 min. Circle 417 on the reader service card

Circle 121 on reader information card

Wastewater Evaporation System Hydro-Blast Inc. Vancouver, Wash.

The Hydro-Vap Model 1500 evapo- rates wastewater to the floor of the unit, not to the top of the gas tube or immer- sion heaters. The unit can handle high suspended solids and is very easy to clean. It is available in stainless steel on all wetted parts including the lid and can

be heated by natural gas, liquid propane, or electricity. Each unit has a heat source, adjustable thermostat, redundant Circle 418 on the reader service card

METAL FINISHING . SEPTEMBER 1998 79