Arjay Engineering Ltd - Manufacturers of level monitors and controls, ppm oil in water monitors, leak detection and alarms, open channel flow monitors and gas detection systems. Stevens Water Monitoring Systems Inc. - Manufacture of water level sensors, water quality sensors, soil moisture sensors, water flow measurement, and basic weather monitoring sensors. Hydrokit - Provides instruments for surface water and ground water sampling, measurement and monitoring. Partech Instruments LTD - Offers water measurement instruments for suspended solids, turbidity, sludge blanket levels, dissolved oxygen, chemical analysers, and level transmitters. Aquatic Life Ltd. - Seller of a comprehensive selection of environmental sampling and monitoring apparatus. Winnipeg, Canada, or buy online. Solinst Groundwater Instruments - Manufactures high quality hydrogeological and hydrological instrumentation. Groundwater monitoring instruments include water level indicators, level and water quality data loggers, groundwater samplers, oil/water interface probes, drive-point piezometers and complete monitoring systems, including multilevel systems. Heron Instruments Inc. - Designer and manufacturer of portable equipment for measuring and logging groundwater levels and well depth. Includes FAQ, catalog, and contacts in Burlington, Ontario. Biospherical Instruments Inc. - A research-oriented company that designs and manufactures state-of-the-art submersible and ground-based optical instruments for monitoring reservoir water quality. In-Situ, Inc. - Supplies water level and water quality instrumentation for hydrologic monitoring equipment and field data logging of water level and quality. YSI - Designs, manufactures and distributes water quality and environmental monitoring equipment, temperature probes, temperature measurement equipment, thermistors, CO2 sensors, glucose analyzers, and lactate analyzers. Environmental Testing and Research Laboratories - Includes information on testing services. QED Environmental Systems - Supplier of pumping systems and equipment for groundwater sampling and remediation. ESI Environmental Sensors Inc. - Specializes in the design, manufacture and distribution of instrumentation and systems for moisture monitoring sensors and systems for landfill closure, agriculture, civil engineering and oil/gas applications. IQ Scientific Instruments - State-of-the-art non-glass pH systems with ISFET silicon-chip sensor technology. A full line of non-glass pH meter and probe are displayed. Turner Designs - A comprehensive site of fluorometers, luminometers, and oil in water monitors used in environmental, biotechnology, and industrial applications. Aquatrak Corporation - Manufacturer of liquid level determination for measuring tides, sea state, river stages, ground water, head and tail water, and tank ullage. Proven technology characterized by accuracy (±3 mm), reliability, versatility, and durability. Schlumberger Water Services - Offers groundwater monitoring instruments and software, multilevel well systems and groundwater monitoring dataloggers. Rickly Hydrological Company - Online catalog of Rickly Hydrological Company, manufacturer of USGS Stream Gaging, Sediment Sampling, and Stage Measurement instrumentation equipment. Thermo Fisher Scientific Inc. - Water quality measuring instruments such as pH meters, ORP meters, TDS/Conductivity meters, dissolved oxygen meters. HD Supply Inc. - Supplies Hester Dendy multiple plate benthic invertebrate samplers direct from the manufacturer. Hydrolab - Multiprobes and displays for surveys, profiling, remote, unattended monitoring of any array of water quality parameters in fresh, salt, ground, waste waters to 200 meters. D-Tec Corporation - Design and manufacture of storm water samplers. Simple and reliable solution for remote monitoring applications. Collection within the first thirty minutes of flow. Global Water Instrumentation, Inc. - Manufactures and markets water level loggers and sensors, velocity meters, flow meters, water quality sensors, samplers, data recorders, meteorological instruments, and related devices. Bright Dyes Dye Tracing Products - Fluorescent dye tracing products for use in groundwater flow tracing, leak detection, septic and sewer inspections and similar applications. Gurley Precision Instruments - Manufacturers of hydrological current meters and accessories for open channels, rivers and streams. Products include Price and pygmy meters, digital indicators and headphone sets, support systems, including cranes and sounding reels. Topac Conductivity Meters and Probes - Instruments for measuring conductivity, salinity, dissolved oxygen, pH and temperature. Sunburst Sensors, LLC - Manufactures autonomous optical chemical sensors for in situ monitoring of carbon dioxide, pH and other chemical properties in ocean and fresh water. GeoInsight - Makers direct push water sampler, small-diameter well devices, and other groundwater sampling and monitoring apparatus. Aqua Bailers, Inc. - Manufacturers of high-quality bailers and other ground water and well sampling equipment. Online catalog and ordering information. TeleDevices LLC - Offers automatic samplers, telemetry, SDADA systems, flow meters and other products for remote monitoring of rainfall, stormwater, and other hydrologic parameters. Includes specifications and online manual. Instrumentation Northwest, Inc. - Manufactures, sells, and rents water resource tools and environmental monitoring products, including water quality sensors, dataloggers, level sensors, submersible pumps and multi-parameter meters. Bennett Sample Pumps, Inc. - Description, technical specifications, pricing and contact information for Bennett sample pump, reels and tube bundles, used for groundwater sampling. Eureka Environmental Engineering - Manufacturer of multiparameter instruments which monitor water quality, including dissolved oxygen, specific conductance, pH, ORP, and stage levels. Turbidimeter.net - Turbidimeters, turbidity standards, and other water related testing equipment. Spectrum analysis and colorimeters. Manning Environmental Inc. - Manufacturer of fluid samplers and associated equipment. Builds both peristaltic and vacuum samplers, and accessories. Advanced Polymer Systems Inc. - Water and turbidity standards, turbidimeters and spectrophotomers, scientific instruments for the waste and drinking water plants. Hf Scientific Inc. - Turbidimeter manufacturer making instruments for the waste and drinking water plants. Durham Geo Enterprises - Manufacturers storm water samplers and groundwater remediation pumps. Environmental Service Products, Inc. - Manufacturer of medical grade PVC bailers, direct push liners, and drum thiefs. Website offers more groundwater products including HDPE and teflon bailers, descriptions, and ordering information. Geoscientific Ltd. - Distributor of environmental monitoring instruments and global positioning systems. McNab Water Monitoring Systems - Instruments to measure conductivity, salinity, and pH. Optek-Danulat, Inc., - Manufacturer of turbidity meters, colorimeters, and suspended solids monitors for in-line process control measuring of liquids and gases. Geotech Environmental Equipment - Manufacturer of a range of water, air and soil sampling, testing and remediation equipment. Remote Data, Inc. - Designs and builds custom monitors for water, air, weather and soil for people who want real-time data from distant or difficult locations. Virtual Polymer Compounds - VPC is a fiberglass fabricator specializing in standard and custom products including flumes, metering manholes and shelters. Clearwater Engineering - Designer and manufacturer of disposable groundwater sampling devices. Features online ordering and catalog. Environmental Test Products - ETP produces a complete line of disposable bailers, well plugs, accessories and industrial cleanup products. Wagtech International - Manufacturers of a range of water and environmental teating equipment.