Block Digestion System

BLOCK DIGESTION SYSTEMImproved digestions for better analysisBD50 & BD28MORE RELIABLE DIGESTIONSThe BD50s and BD28s Digestion Systems heat samples at a controlled rate, in thepresence of one or more acids, to the required temperature then holds the samplesat that temperature until digestion is complete.The BD50s and BD28s’ unique flat plate design results in an even temperaturedistribution across the block and more precise temperature control. The temperatureof each digestion position in the BD50s and BD28s is tightly regulated ensuring allsamples in the batch are digested equally (diagram A).Other block designs use a more common rod heater design that results in a greatertemperature variation across the digestion block (diagram B).The different coloured zones shown on the BD50s and BD28s block illustrate thetemperature isotherms across the block at 400°C.In addition, your digestion methods are stored electronically to provide reproducibilityfrom batch- to-batch, operator-to-operator. You can store up to 20 programs, eachwith up to 30 steps, allowing you to automate the most complex digestion procedure.The BD50s and BD28s uniqueflat plate heating design provideseven heating leading to betterquality digestions.As a market leader, SEAL has over 1,000 applicationsavailable and under continual development. Markets includewater, wastewater, soil, plant, fertilizer, food and beverage.Please contact us for your specific application.BETTER PRODUCTIVITYThe BD50s and BD28s Programmable Digestion Systems perform acid digestionof large numbers of samples under controlled conditions and are available intwo different formats:28 place for 250ml digestion tubes50 place for both 75ml and 100ml digestion tubesDesigned for durability and robustness, a BD50s/BD28s digestion system includesa block digestion unit, microprocessor controller, tube rack/draftshield, a set ofdigestion vessels and a cooling stand that supports the tube rack above the block.If you are looking to automate your digestions, the BD50s and BD28s offersenhanced productivity, better quality digestions and increased safety.BD50 & BD28ABCommon rod heating blockshave large temperature variationsacross the block resulting in poor,uneven digestions.28 place block with digestiontubes in the heating position50 place block with digestiontubes in the cooling positionSAFETYThe excellent temperature stability of the BD50s and BD28seliminates the need to move individual samples to a more“favourable position” during the digestion.Controlled heating rates, as low as 1°C per minute, protectagainst bumping and splattering of reactive samples.The BD50s and BD28s Controller senses power failures andwill record the digest conditions and hold the digest toprotect your samples. An in-built safety cut-out protectsfrom overheating. The Controller is separate from the Blockprotecting the electronics and the operator from acid fumes.ECONOMICALApart from power and reagents, the BD50s and BD28s haveno ongoing consumable costs and do not use any componentswith a limited service life.The provision to program an elevated standby temperaturefor rapid start up enables you to process more batches perday. In addition, you can safely run a digest overnight so youhave a full batch of digested samples ready for analysis atthe beginning of each day. Automatic operation frees keylaboratory personnel from the tedium of managing longdigestion processes and provides an early start for analysis.The BD50s and BD28s also have a small footprint to saveyou valuable fume cupboard space.Total Kjeldahl NitrogenTotal PhosphorusMetalsMercuryC.O.D.and more digestionsACCESSORIESP L E A S E V I S I Twww.seal-analytical.comor contact your local SEAL Analyticalrepresentative about your specific application.IDEAL FORTeardrop stoppersCaptures and recondensesdigest fumes reducingacid loss and preventingcross contamination.Splash-headFor safe reagent additionduring a digestion to250mL digestion tubes.Tube rack/draftshieldEnables all tubes tobe easily transportedand keeps the radiatedheat around the tubesduring digestion.Digestion TubesAvailable in straight sidedtubes or as volumetrictubes with a constrictedneck and class “A”calibration mark.Cooling StandSupports the tube rackabove the block tofacilitate rapid cooling.SEAL Analytical is a global company with offices worldwide - contact us at:SEAL Analytical GmbHWerkstrasse 5D-22844 NorderstedtGermanyTel: +49 (0)40 60 9292 9-00Fax: +49 (0)40 60 9292 9-02info.germany@seal-analytical.comSEAL Analytical, Inc.Mequon Technology Center10520-C Baehr Rd.Mequon, WI 53092United StatesTel: +1 (262) 241 7900Fax: +1 (262) 241 7970sales@seal-us.comSEAL Analytical Ltd.2 Concorde CloseSegensworthFarehamHampshire PO15 5RTUnited KingdomTel: +44 (0) 1489 864400Fax: +44 (0) 1489 880531mail@seal-analytical.comwww.seal-analytical.comPOWER REQUIREMENTSBlock: 220-260VAC, 50/60 HzController: 100-260VAC, 50/60 HzOPERATION REQUIREMENTSDigestion block must be operatedin a fume hood. Controller shouldbe operated outside of fume hood.FOOTPRINTBlock: 60 cm (23.5”) W x 28 cm (11”) DController: 25 cm (10”) W x 24 cm (9.5”) DTEMPERATURE RANGEAmbient to 450°CSET POINT ACCURACY+/- 2°CSEAL Analytical ShanghaiFortune International PlazaSilver Building, Room 614No. 43, Guo Quan RoadShanghai 200433ChinaTel: +86 21 3362 5002Fax: +86 21 3362 5002BD50 2.0BD USA 0212SPECIFICATIONSCAPACITY50 x 75ml tubes, 50 x 100ml tubes, 28 x 250ml tubesSYSTEM CONFIGURATIONSDG-U-A021 BD28s system (28 place) consists of a Heating Block,Programmable Controller and Tube rack/draftshieldDG-U-A024 BD50s system (50 place) consists of a Heating Block,Programmable Controller and Tube rack/draftshieldACCESSORIES4003035 Digestion tubes, glass, 75ml, straight (50pk)4003005 Digestion tubes, glass, 75ml, volumetric (50pk)4003036 Digestion tubes, glass, 100ml, straight (50pk)4003006 Digestion tubes, glass, 100ml, volumetric (50pk)4003031 Digestion tubes, glass, 250ml, straight (28pk)4003001 Digestion tubes, glass, 250ml, volumetric (28pk)5001241 Cooling stand for 28 place tube racks5001511 Cooling stand for 50 place tube racks8040703 Teardrop stoppers, glass (75/100ml tubes) for enhanced reflux (50pk)8040704 Teardrop stoppers, glass (250ml tubes) for enhanced reflux (28pk)8027565 Splash-head, glass, for 250ml tubes5001231 Tube rack/draftshield, 28 place for 250ml tubes8028114 Tube rack/draftshield, 50 place for 75ml or 100ml tubesBD50 & BD28