Buying guides

15 selection guides, one per equipment category. Each one walks through the decisions to make before comparing models, the details a useful quotation needs, and the questions buyers ask most.

• A viscosity result belongs to a complete test conditionA viscosity result belongs to a complete test conditionFor comparable results, define the viscometer model or torque range, spindle, speed, temperature, container and sample preparation together. A viscosity value without those conditions may not reproduce the same test.Read the guide
• Build the equipment list from the method, not from a generic laboratory checklistBuild the equipment list from the method, not from a generic laboratory checklistISO 7218:2024 covers general requirements and guidance for food-chain microbiological examinations. The exact equipment still depends on the organism, sample, reference method and your laboratory quality system.Read the guide
• Check the connector first, then the sampleCheck the connector first, then the sampleAn electrode is chosen against two unrelated things: the meter it plugs into, and the sample it sits in. The connector decides whether it works at all. The junction and body decide how long it lasts and whether the reading can be trusted.Read the guide
• Choose the meter, sensor and standards as one measurement systemChoose the meter, sensor and standards as one measurement systemFor a Thai QC laboratory or production team, a useful quotation names the meter, compatible sensor and calibration supplies together. Start with the sample and acceptance requirement, then compare range, uncertainty or accuracy specifications, and the records your method needs.Read the guide
• Choose water quality for the application, then size the systemChoose water quality for the application, then size the systemType I, II and III labels are a starting language—not a complete specification. Define the method’s contaminant limits, feedwater, peak and daily demand, dispense pattern and maintenance plan before comparing systems.Read the guide
• Match the method, rotor and tube before comparing maximum speedMatch the method, rotor and tube before comparing maximum speedA useful centrifuge quotation starts with the required separation and sample format. RCF, rotor compatibility, tube size, batch capacity and temperature control are more actionable than a model name alone.Read the guide
• Maximum temperature is only one part of the furnace specificationMaximum temperature is only one part of the furnace specificationDefine the process, continuous working temperature, load, chamber, atmosphere or exhaust need, program and utilities. A furnace that reaches the setpoint may still be unsuitable for the sample or duty cycle.Read the guide
• Quote the complete filtration path—not the pump aloneQuote the complete filtration path—not the pump aloneA working setup combines a pump, protection trap, tubing, filter holder, receiver and membrane that are compatible with the sample. Chemistry, viscosity, solids and batch volume determine the configuration.Read the guide
• Reorder bottles and beakers, or match a replacement to your existing setReorder bottles and beakers, or match a replacement to your existing setFor routine glassware, list the item, capacity, material and quantity. For volumetric work, add the required tolerance class. To replace a flask or another part of an existing assembly, include its model and connection details so we can check the fit before quoting a single part or a complete set.Read the guide
• Send your consumables list with the sizes and packs you useSend your consumables list with the sizes and packs you useA routine supply list can include filter paper, pipette tips, gloves, wipes, tubes and chemicals from several brands. Send the items used by your QC, production or laboratory team together. We will check the specification, pack size and availability of each line, and identify any alternatives for your approval.Read the guide
• Specify the smallest sample as well as the heaviest loadSpecify the smallest sample as well as the heaviest loadA balance must accommodate the container and largest load, while meeting the required accuracy for the smallest net sample. Readability is only the display increment. Start with those two loads and the allowed weighing tolerance before comparing model names or decimal places.Read the guide
• Start with the analytical technique—not the word “spectrometer”Start with the analytical technique—not the word “spectrometer”Define the method, wavelength region, sample format and required records before comparing instruments. UV-Vis, visible, atomic absorption and chromatography are different techniques and should not be treated as interchangeable catalog names.Read the guide
• Start with the load and process—not chamber litres aloneStart with the load and process—not chamber litres aloneThe same chamber volume can serve very different work. Describe what will be processed, the container geometry, batch size, utilities and documentation before comparing models or asking for price.Read the guide
• Start with the set point and the actual room temperatureStart with the set point and the actual room temperatureA microbiological incubator, a cooled BOD incubator and a CO2 incubator are different machines, not grades of one. Fix the application, the set point and the ambient temperature of the room it will stand in before comparing chamber volumes.Read the guide
• Turn the water-testing requirement into a parameter-by-parameter orderTurn the water-testing requirement into a parameter-by-parameter orderA water-testing setup can combine sensors for pH, conductivity and dissolved oxygen with photometric tests for specific substances. List the result, expected range and required method for each parameter. If you already have the instrument, send its model and the reagent or replacement-part code to request just the supplies you need.Read the guide