Manufactures and sells ammonia and nitrate analyzers, and heaters for HPLC columns and mobile phase. Includes specifications, and details to order from Boulder, Colorado.Ammonia Analyzers - Timberline Instruments: Mobile Phase & HPLC Column Heaters TIMBERLINE INSTRUMENTS Products Ordering Site Index Related Links Contact Info Downloads Manufacturer of ammonia and nitrate analyzers, HPLC column heaters, and mobile phase pre-heaters. Timberline Filters: Manufacturer of water filters for outdoor enthusiasts. Timberline Instruments 1880 S. Flatiron Ct. Suite I, Boulder, CO 80301 (303) 440-8779 (80