This waterproof, battery-operated conductivity meter stands up to the most demanding soil and water analysis applications and delivers over 2,000 hours of continuous operation. Convenient Quick-Start Guide is located on the back of the meter to make the unit easy to operate in the field. In addition to pH, the rugged meter displays conductivity, resistivity, salinity, TDS and temperature measurements and offers a full complem…
This competitively-priced, dual function pH/ISE meter is easy to set up and use while providing reliable measurement of pH and ionic concentrations for quality control and general analysis applications. Automatic pH calibration or 1 to 5 point manual calibration for pH and direct ion measurement ensures accuracy even at extremes of concentration. The rugged meter offers a full complement of GLP-related features—including avail…
This competitively-priced, dual channel and dual display pH/DO meter is easy to set up and use while providing reliable measurement of pH and dissolved oxygen for water testing applications. The rugged meter features enhanced stability indicators, salinity correction and automatic barometric pressure compensation and offers a full complement of GLP-related features—including available 21 CFR Part 11 software option. Selectable…
This waterproof, battery-operated pH/ISE meter stands up to the most demanding quality control and general analysis applications and delivers over 2,000 hours of continuous operation. Convenient Quick-Start Guide is located on the back of the meter to make the unit easy to operate in the field. The rugged meter provides reliable measurement of pH and ionic concentrations and offers a full complement of GLP-related features—inc…
This waterproof, battery-operated pH/DO meter stands up to the most demanding water analysis applications and delivers over 2,000 hours of continuous operation. Convenient Quick-Start Guide is located on the back of the meter to make the unit easy to operate in the field. The rugged meter displays DO concentration or percent DO Saturation and offers a full complement of GLP-related features—including available 21 CFR Part 11…
Biochemical oxygen demand (BOD) determination is still one of the most important parameters in water resource management. It can be used to evaluate the impact of biodegradable substances in waters and waster water. With its OxiTop ® systems, WTW offers a unique, modular and mercury-free instrument system. It is not only suitable for BOD determination, but also for measuring biodegradability and deple-tion.The advantages of Ox…
Complete packages for 6 or 12 simultaneous measurementsMeasurement using OxiTop ® is based on pressure measurement in a closed system: microorganisms in the sample consume the oxy-gen and form CO 2 . This is absorbed by NaOH, creating a vacuum which can be read directly as a measured value in mg/l BOD.The used sample volume regulates the amount of oxygen available for a complete BOD. Measurement ranges of up to 4,000 mg/l can…
Complete package for 6 or 12 simultaneous measurements – For a larger number of samples and with simple sample measurement OxiTop ® Control is the logical further development of the successful OxiTop ® system using software-controlled functions and infrared interface to communicate with a handy controller, the OC 100. This system enables the simultaneous and grouped start, management, storage and tracking of 100 measuring head…
common featuresSimultaneous sample management with option of grouping up to 100 OxiTop ® -C measuring heads.Data call-up of one parallel sample with statistical evaluation and as individual data.Automatic calculation and graphical display of BOD value.Data transfer even through glass doors.Protocol and documentation of data via Achat OC commu-nication program in combination with a PCGLP and AQS with inspection intervals for ca…
Instead of the display and keys, the OxiTop ® -C measuring head has an infrared interface with which it communicates with Controller OC 100 or OC 110. By "e;pointing"e; the controller at an OxiTop ® -C measuring head it can be identified and started, data can be called up or deleted and sampling progress can be displayed.Each measuring head has its own identification number; this means that manual identification of samples is…
Stirrers IS 6 and IS 12 have been specially developed for BOD measurement with the OxiTop ® system. Software-controlled speed regulation prevents the magnetic stirrer bar from getting caught or wobbling. The speed is selected so that an optimal gas exchange with the sample takes place. The stirrer is maintenance-free and non-wearing as it contains no moving parts. The IS 6-Var model has been specially developed for use wit…
Determination of anaerobic degradation processes: biogas determinationAnaerobic degradation processes take place in the absence of oxygen. In order to be able to fill the gas space above the sample with inert gas the measuring bottle has a septum sealed nozzle. When anaerobic degradation has taken place the dissolved CO 2 can be driven off and then removed from the gas space by means of a CO 2 absorber. The resulting pressure…
Microbiological growth and stress investigations: determination of the respiration rate (aerobic/anaerobic measuring operation)The use of special measuring bottles with a septum sealed nozzle allows the inter-ference-free addition of substrates and solutions. Pressure alterations could indicate a reduction in oxygen concentration, for example, which could make the addition of oxygen or air necessary (possibly other gases as we…
Thermostat box with forced air circulation for 68 °F (tolerance 67.1 - 68.9 °F / 20 ±0.5 °C)OxiTop® Box is a benchtop model with hinged clear-view cover which can accommodate a maximum of either 12 OxiTop ® simultaneous measurements or 20 Karlsruhe bottles.The chamber is equipped with a connection for an IS 6 or IS 12 stirrer.A special compartment is provided for thermostatting 6 methylene blue samples.The box is made of non-c…
May be used in a variety of laboratory assays Flat bottom strips are designed to easily break apart and may be used in an style strip holder that allows each individual well to be positioned back into the plate once broken High binding surface binds medium (>10kD) and large biomolecules that possess ionic groups and/or hydrophobic regions. Binding capacity is approximately 400 to 500ng IgG/cm2. Ideal for immunoassays Reco…
The Photometer for all simple and rapid Routine Wastewater and Drinking Water Measurements!This photometer allows measurement of convenient rapid tests: simply lift the cover, insert the coded cuvette and read the result. The "AutoSelect" function performs all necessary settings. The cover serves both as dust cover and on switch.When the cover is opened, the instrument switches on and checks the optical system itself. It also…
The photometer for professionals!All available WTW test kits can be used for measurement in reaction cuvettes for rapid tests or in rectangular cuvettes with higher sensitivity. Apart from tests, the 12 available wavelengths and the underlying reference beam technology permit measurement of kinetics with excellent stability.Simple and easy operation: lift the cover, insert the cuvette and read the result. The "AutoSelect" func…
The all-round instrument for laboratory use photoLab ® Spektral offers free selection of wavelength between 330 nm to 850 nm with a free choice of wavelength. A high-quality Zeiss optical module is at the heart of this contains spectral photometer. Its no-wear technology no mechanical parts. In operating mode, the photometer carries out regular AutoChecks thus ensuring correct measuring results. These can be checked and docume…
The new portable photometers offer decisive advantages for field use: They are handy, have a low power consumption and a lot of extra features!Smart adapter solution for the use of different cuvettesBacklit display with automatic switch-offUser guidance via display for easy operation without handbook readingLarge selection of test sets for all requirementsMethod and software update via internetIntegrated pH measurement with au…
The portable photometer pHotoFlex Turb has all the features of the pHotoFlex and additionally offers the ideal complement of turbidity measurement!This is an ideal combination wherever fluids, from water to wine, have to be measured in the field. In such cases, turbidity, pH and photometric parameters will often play a role.In addition to 6 wavelengths for photometric measuring, pHotoFlex Turb has an infrared light source for…
Thermoreactors for COD and all other thermal Digestion ProcessesThermoreactors are required for chemical digestion processes, such as for COD, total nitrogen or total phosphorus. They ensure that the digestion is carried out completely, as they maintain the necessary high reaction temperature throughout the whole of the defined period. In each of the thermoreactors from WTW the most important temperatures and digestion times a…
The investigation and monitoring of biological cleaning treatment processes are becoming more and more important with respect to the environmental requirements such as wastewater treatment, soil remediation and waste treatment.Biological tests are often in the foreground as well as the usual physicalchemical measuring methods. In order to determine the biodegradability of foodstuffs, pollutants, harmful substances or waste sub…
Soil respiration measurements are used for forecasting, surveyingand checking remediation work, for biodegradability measurements of substances (pesticides, fungicides, fertilizers, etc.) as well as for carrying out toxicity tests.This determination is possible with the OxiTop® Control System and special, practically-tested measuring vessels in a very accurate, simple and favorably-priced way.The expenditure for personnel and…
The determination of the biodegradability should be checked before “new” chemicals are used for the first time, not only for environmental reasons but also to minimize disposal charges.The sample and a blank are stirred at a constant temperature for 28 days in closed bottles. The CO2 produced is removed from the gas space by means of an absorber so that the resulting negative pressure is a measure of the biodegradability.The c…
An accepted, approved protein analyzer based on Dynamic Flash Combustion technology, the FlashEA 1112 N/Protein Analyzer is accurate, low cost tool that speeds up the entire analytical process.Product DetailsThe Finnigan FlashEA 1112 N/protein Analyzer operates according to the "Dynamic Flash Combustion" technique ensuring accurate results in any material requiring nitrogen/protein determination from trace level to high percen…
