From the laboratory
Blog: premium equipment worth buying, explained by a testing lab
Purifiers, softeners, freezers, kitchen appliances and lab instruments in the ₹10,000+ range. We explain what each type does, what to check before buying, and where a laboratory test still matters.
As an Amazon Associate we earn from qualifying purchases. Product links open Amazon.in. Prices and availability are shown on Amazon.
Home water purification
Choosing purifiers, softeners and filters for your home, based on what is actually in your water.
Home water purificationBest RO water purifiers for borewell and high-TDS waterA Kolkata testing lab explains when borewell water really needs RO, what TDS and hardness levels mean, and which premium RO purifiers are worth buying.Home water purificationUnder-sink water purifiers for modular kitchens: are they worth it?Pros, cons and installation tips for under-counter RO purifiers in Indian modular kitchens, with premium models worth considering.Home water purificationWater softeners for hard water: bathroom and whole-house optionsWhite scale on taps, dry hair and short geyser life point to hard water. A testing lab explains hardness levels and premium softeners worth buying.Home water purificationYellow or muddy borewell water? Whole-house iron and sediment filtersWhy borewell water turns yellow or leaves brown stains, what the IS 10500 iron limit is, and which whole-house filters help.Home water purificationSmart, alkaline and hot-water purifiers: what you are paying forTDS-adaptive filtration, app alerts, alkaline stages and hot dispensing: a testing lab separates the useful premium features from the marketing.
Water and cold storage for businesses
Commercial RO plants, coolers, UV systems and freezers for offices, schools, restaurants and shops.
Water and cold storage for businessesCommercial RO plants (100–150 LPH) for offices, schools and restaurantsHow to size a commercial RO plant, what it costs to run, and the testing and hygiene a school, office or restaurant should keep up.Water and cold storage for businessesStainless steel water coolers for offices, schools and factoriesChoosing a 40–120 litre stainless steel water cooler, why it needs a purifier upstream, and how to keep it hygienic.Water and cold storage for businessesUV water sterilizers for homes, hostels and buildingsWhen a UV sterilizer is the right choice, why water clarity matters, and premium inline UV systems for buildings and canteens.Water and cold storage for businessesDeep freezers for restaurants, cloud kitchens and caterersFood-safe frozen storage for small food businesses: temperatures, capacity, FSSAI hygiene points and premium deep freezers to consider.Water and cold storage for businessesVisi coolers for dairy, sweet and grocery shopsWhy display chillers must hold 5 °C or below, what to look for in a visi cooler, and premium models for shops and canteens.
Kitchen food safety
Appliances that keep food cold, clean and safe at home and in small food businesses.
Kitchen food safetyChoosing a refrigerator for food safetyCorrect fridge temperatures, how to store raw and cooked food, and premium frost-free and convertible refrigerators worth buying.Kitchen food safetyDishwashers for Indian kitchens: hygiene, hard water and what to buyDo dishwashers clean Indian utensils? Hot-water hygiene, hard-water settings, and premium dishwashers for families.Kitchen food safetyVacuum sealers for home and small food businessesHow vacuum sealing extends freezer and fridge life, the food safety limits you must know, and a premium sealer worth considering.Kitchen food safetyFood dehydrators for home producers and small food businessesDry fruit, vegetables, herbs and snacks safely: moisture targets, mould prevention, FSSAI basics and premium stainless steel dehydrators.Kitchen food safetyConvection microwaves and reheating food safelyWhy microwaved food can have cold spots, how to reheat leftovers safely, and premium convection microwaves for Indian kitchens.
Lab and field testing instruments
Meters, balances and microscopes for QC teams, treatment operators, colleges and serious hobbyists.
Lab and field testing instrumentsProfessional pH meters for water treatment and food QCWhy cheap pH pens drift, what accuracy you need, how to calibrate, and premium pocket pH meters from Apera, Hanna and Extech.Lab and field testing instrumentsConductivity, TDS and salinity meters beyond the basic TDS penWhen a basic TDS pen is not enough: calibrated conductivity meters and salinity testers for RO plants, aquaculture and brine.Lab and field testing instrumentsFree chlorine and turbidity meters for water treatment operatorsDigital free chlorine colorimeters and turbidity meters for housing societies, pools, packaged water plants and food factories.Lab and field testing instrumentsPrecision and analytical balances for QC labs and food plants0.01 g or 0.001 g? How to choose a lab balance, calibrate it, and premium precision balances for QC and formulation.Lab and field testing instrumentsCompound microscopes for college labs and food microbiologyWhat magnification you need to see bacteria, monocular vs binocular, and premium compound microscopes for students and teaching labs.
Buy after you test
The right purifier, softener or filter depends on what is in your water. Get a drinking water test first: we collect samples across Kolkata.