The glass filter devices are made of borosilicate glass 3.3 and can withstand acids, alkalis and solvents and even temperatures of up to 540 °C.

Chemical digestion of samples is required for the photometric determination of COD, TOC, total chromium, total phosphate and total nitrogen. The required temperatures and reaction time can be selected by using the membrane keypad of the reactor RD 125. The unit works at three different temperatures (100 / 120 / 150 °C) and three pre-set reaction times (30 / 60 / 120 minutes). When digestion is complete, the reactor automatically switches off and gives a corresponding LED indication with short beep alarm. The RD 125 reactor is fitted with 24 holes for 16 mm diameter vials.SpecificationsPower supply:230 V / 50-60 Hz or 115 V / 50-60 Hz (switchable)Power:550 WDimensions:248 x 219 x 171 mmWeight:3.9 kgHoles in the aluminium block:24 holes, 16.2 mm ± 0.2 mmSelectable temp.:100 / 120 / 150 °CSelected time:30 / 60 / 120 / min. and continuous operation (∞)Heating up:from 20°C to 150°C in 12 min.Protection against overheatingBeeperEnvironmental conditions:10 - 40 °C max. 85 % rel. humidity

The continuously adjustable COD series magnetic stirrer with 12 stirring points is used to mix the samples during the metering process. Due to its watertight casing and also its external power supply and control, it is suitable for use under water.

Due to the chemical properties suitable for various photometers (e.g. Lovibond®, Hach®) with 16 mm tube diameter.

Programmable control unit for behrotest® digester blocks.behr one-button operation for particularly easy and quick programming. Menu navigation in the language of the country. 10 optionally configurable programs for block temperature and digestion time.The TRS 300 has a special COD program which has already been set by the plant. Therefore in the operation mode "COD" it heats up to a temperature which is 20°C above the set target temperature. After inserting the samples, the 20°C higher target value remains for another 6 minutes. This procedure ensures heating up to 148°C within 10 minutes which is specified by the ISO norm, and at the same time causes extremely high temperature constancy during the subsequent reaction process. The supplied Windows software permits the user to transfer time/temperatures profiles, which are specifically for the application, via the RS232 interface in both directions between one or more units (TRS 300) and a PC. Temperature data can also be transmitted from the unit to the PC via the RS232 interface while operating. The user can save them if necessary and print them out as graphics. Integrated safety function switches the connected units off if there is a short-circuit and an interruption of the temperature sensor.

COD acc. to ISO Precision heating blocks with 6, 12 or 24 sample positions. Flat surface heater for even temperature distribution to each sample position. Stainless steel and powder coated steel casing. Extensive insulation provides for inoffensive temperatures of the casing surfaces.End-to-end grooves in the precision aluminum plate at the bottom of the bores simplify sample handling and provide for exemplary safety of the analyst:During sample insertion the grooves cause pressure compensation. Thus even the most accurately fitting reaction vessels slip easily into the bores, which is required to effortlessly handle the behr insert and yoke type frames for RG 2 reaction vessels.When inserting the samples into the hot heating block adherent moisture on the vessel surface evaporates in sudden bursts. The grooves drain off the vapor which otherwise might cause the vessels to jump up and down which might eventually lead to the destruction of the vessels.In case of one or more vessels overflowing the liquid COD samples discharge through the grooves minimizing the danger of damages inside the block caused by acids.

For easy, reproducible sample digestion. With 2 separately controlled heating blocks and separate protective hoods. Automatic switch-off with acoustic signal. Programmed for all standard methods, own digestion methods can be defined by the user.3 presets and 6 user-defined methods programmableIlluminated digital display for remaining time, temperature and user guidanceWith overheating protection and insulated housingSpecificationsHoles:Left block 15x13 mm, right block 6x13 mm and 4x20 mmTemperature range:37...150 °CTemperature accuracy:±1 °CDigestion time:1...480 min.Permissible ambient temperature:10...45 °CMax. humidity:90 % r.F.Dimensions (W x D x H):250 x 310 x 145 mmWeight:2.8 kgPower supply:115...230 V, 50/60 Hz

To expel chloride, e.g. when determining the COD of sea water.

COD metering funnels, placed on top of the COD reaction vessels, simplify the addition of sulphuric acid to several samples simultaneously.COD metering funnel together with a cooling trough and a series magnetic stirrer increase the safety and offer considerable relief to the user when determining the COD.

The continuously adjustable COD series magnetic stirrer with 12 stirring points is used to mix the samples during the metering process. Due to its watertight casing and also its external power supply and control, it is suitable for use under water.

The cooling trough prevents the overheating of the COD samples during the critical addition of sulphuric acid. In addition, it is used to cool the samples after the heating phase.

The HTI 1 manual titration station consists ofa burette with digital display anda magnetic stirrer with a precisely fitting holder for COD reaction vessels. A screen serves as a neutral background and allows the user to determine the colour change at the end of the titration precisely. Therefore a titration could always carried out under similar visual conditions. This improves the precision and the reproducibility of the results.The precise positioning of the reaction vessels in the holder on the top of the magnetic stirrer also contributes to this. The angled wing of the screen protects against lateral dazzling light.SpecificationsVoltage230 VAC/ 115 VACFrequency50/60 HzWeightapprox. 3.5 kgDimensions in mm (W x D x H)approx. 330 x 200 x 600

Workstation model SMA-ARBThe behrotest® workstation model SMA-ARB is a basic system for simultaneous aqua regia digestion of either 6 or 12 samples for heavy metals analysis.System components:Precision 6 or 12 sample SMA heating block for round-bottom sample vessels of Ø 41.8 mm, temperature range 20 to 300 °C.External ET 2 controller, operating range 20 to 399°C. Time settings from 10 to 120 min. and continuous operation.6 or 12 SR 2 250 ml round-bottom sample vessels with standard taper mouth and PVDF collar.6 or 12 RFK 1 Allihn reflux condensers.6 or 12 AS 1 absorption vessels.SG/B stainless steel vessel holding frame for 6 or 12 sample vessels.Support scaffold with cooling water distributor and storage holder for 6 or 12 condensers.Workstation model SMA-ARMThe behrotest® SMA-ARM workstations are provided with a programmable microprocessor-controlled time/temp. controller as well as a fume manifold for drawing off the acid vapors. This results in greater convenience and functionality in routine laboratory operations.

For COD determination. Complete workstations for simultaneous determination of maximum 6 or 12 samples in acc. with ISO, DIN etc. Manual metering and titration.A workstation consists of the following componentsTRS 300 Microprocessor-controlled time and temperature control unit with COD programCSB/E Precision heating block for RG 2 reaction vesselsE/B Insert and yoke type frame for RG 2 reaction vesselsKW/N Cooling trough with holder and stands for E/BSM 12/N Series magnetic stirrer for E 12/B insert/yoke type frame (only for PB-CSB 12/M)RG 2 Reaction vesselsMRST 2 Magnetic stirrer rod set , 12 rodsSIST 100 Boiling stones , contents 100 gLK1 COD Air coolersLS Air cooler stand for LK COD air coolersPTFE 29 PTFE Collars for LK 1, set of 12 collarsTS COD Transport stands for E/B insert/yoke type frameHTI 1 Manual titration station

Unit configuration for simultaneous digestion of maximum 6 or 12 COD samples in acc. with ISO, DIN etc.A digestion unit consists of the following components:TRS 300 microprocessor-controlled time and temperature control unit with COD programCSB/E Precision heating block for RG 2 reaction vesselsE/B Insert and yoke type frame for RG 2 reaction vesselsKW/N Cooling trough with holder and stands for E/BRG 2 Reaction vesselsLK 1 COD air coolersLS Air cooler stands for LK COD air coolers

Thermoreactor with pre-programmed and user-defined programmes for the digestion of standard parameters in reaction cuvettes. The CR4200 allows standard-compliant digestions with programmes for the standard parameters COD, total nitrogen, total phosphorus, TOC and heavy metals in galvanisation. In addition, 8 separate programmes can be created for special digestions at temperatures between room temperature (25 °C) and 170 °C. Independent thermoblocks allow 2 different programmes to be run simultaneously.2 independent thermoblocks with 12 holes each for reaction cells with an outer diameter of 16 mm8 stored programmes for all important digestions: 148 °C for 120 min; 148 °C for 20 min; 120 °C for 30 min; 120 °C for 60 min; 120 °C for 120 min; 150 °C for 120 min; 100 °C for 60 min, 100 °C for 30 minAutomatic temperature switch-off at the end of the set programmeAQA/IQK with optional external temperature sensor for documentationPower supply 115/230 VAC, 50/60 Hz

Thermoreactor with pre-programmed and user-defined programmes for the digestion of standard parameters in reaction cuvettes. The CR3200 allows standard-compliant digestions with programmes for the standard parameters COD, total nitrogen, total phosphorus, TOC and heavy metals in galvanisation. In addition, 8 separate programmes can be created for special digestions at temperatures between room temperature (25 °C) and 170 °C.2 thermoblocks with 12 holes each for reaction cells with an outer diameter of 16 mm8 stored programmes for all important digestions: 148 °C for 120 min; 148 °C for 20 min; 120 °C for 30 min; 120 °C for 60 min; 120 °C for 120 min; 150 °C for 120 min; 100 °C for 60 min, 100 °C for 30 minAutomatic temperature switch-off at the end of the set programmeAQA/IQK with optional external temperature sensor for documentationPower supply 115/230 VAC, 50/60 Hz

Routine device for waste water analysis. Thermoreactor with preset programmes for the digestion of standard parameters in reaction cuvettes. The CR2200 allows standard-compliant digestion with programmes for the standard parameters COD, total nitrogen, total phosphorus, TOC and heavy metals in galvanisation.1 thermoblock with 12 holes for reaction cells with an outer diameter of 16 mm8 stored programmes for all important digestions: 148 °C for 120 min; 148 °C for 20 min; 120 °C for 30 min; 120 °C for 60 min; 120 °C for 120 min; 150 °C for 120 min; 100 °C for 60 min, 100 °C for 30 minAutomatic temperature switch-off at the end of the set programmePower supply 115/230 VAC, 50/60 Hz

These standards are ideal for use as control standards to verify that correct analysis for COD has taken place. Extensive range (10 to 60000 ppm), NIST traceable, 2 years shelf-life. Bottles of 500 ml.

According to ISO 15705. This measuring station from Lovibond® allows the accurate, rapid, and economical determination of meaningful waste water COD levels (Chemical Oxygen Demand). Easy operation, even by unskilled operators. Comprises of COD photometer, 25 tube tests covering lower measuring ranges, a reactor block for sample digestion and a tube stand. Waterproof acc. to IP 68, 1 hour at 0.1 meter.Scope of supply: Instrument in carrying case, 4 batteries (AA), adapter for round vials diam. 16 mm, 2 sets of tube tests 0-150 mg/l and 0-1500 mg/l, thermoreactor RD 125, tube stand, 2 syringes, instruction manual.Specifications: Range: 0 to 15.000 mg/LMeasurement cycle:approx. 3 seconds (method dependent)Display:LCD readoutOptics:High-quality Interference FiltersPower:4 batteries (AA) capacity approx. 53 hours or 15000 tests (continuous operation with backlit switched off)Overall W x D x H:190 x 110 x 55mmStorage:16 data setsInterface:internal interface for test data transfer