Calibration Capabilities, Accredited Ranges & Uncertainty
Our current BAB-accredited scope under ISO/IEC 17025:2017 (Certificate No. 02.016.22, valid until 28 November 2028) — every parameter, measurement range and expanded uncertainty we are independently accredited to calibrate, plus the specialised work we take on beyond it.
Parameters, Ranges and Instruments
Jump to a field, or scroll through the complete accredited scope below. Do not see your instrument? Send us the make and model and we confirm the same day.
Thermal — Temperature
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Digital & Analog Thermometers, PT100 / RTD / TC (with or without Controller/Indicator), Temperature Sensor, Transmitter, Switch, Infrared Thermometer, Melting Point Apparatus, Polarimeter, Iron Machine (In Lab & On Site) Method ION.WI-46M |
−40 to 50 °C | ± 0.07 °C |
| 50 to 150 °C | ± 0.11 °C | |
| 150 to 650 °C | ± 0.16 °C | |
| Glass Type Thermometers, Digital Thermometers, Temperature Gauges / Indicators, BOD Sensor (In Lab & On Site) Method ION.WI-45M |
−20 to 50 °C | ± 0.07 °C |
| 50 to 150 °C | ± 0.12 °C | |
| 150 to 650 °C | ± 0.18 °C | |
| Temperature Baths, Incubators, Oven, Autoclave, Muffle Furnace, Refrigerator, Environmental / Climatic Chamber, Humidity Chamber, Tunnel, Cold Room, Warehouse, Washing Machine, Dryer Machine, Well Blocks, Black Body Source, Hot Surface / Hot Plate, Whirling Hygrometer, Thermal Imager, Molding Machine, COD Reactor, Heat Seal, Fusing Machine, Moisture Analyzer, Washcator, Gyrowash, Tumble Dryer, Water Bath, Sterilizer, Ozone Machine (In Lab & On Site) Method ION.WI-47M |
−40 to 200 °C | ± 0.08 °C |
| 300 to 400 °C | ± 0.17 °C | |
| 300 to 1500 °C | ± 0.31 °C |
Thermal — Humidity
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Humidity Data Logger, Humidity Chamber, Moisture Meter, Thermo-Hygrograph, Dehumidifier (In Lab) Method ION.WI-49M |
5 to 95 %RH | ± 0.65 %RH |
Electro-Technical
Voltage, current, resistance, frequency, capacitance, inductance and power.
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| AC (10 Hz–1 kHz) & DC Voltage — Multimeter, Clamp Meter, Process Calibrator, Energy Meter Method ION.WI-60M |
Up to 300 mV | ± 0.001–0.002 V |
| 300 mV to 3 V | ± 0.002–0.243 V | |
| 3 to 30 V | ± 0.243–0.346 V | |
| 30 to 300 V | ± 0.346–1.777 V | |
| 300 to 1000 V | ± 1.777–5.90 V | |
| AC (10 Hz–1 kHz) & DC Current — Multimeter, Clamp Meter, Process Calibrator, Energy Meter Method ION.WI-60M |
Up to 30 mA | ± 0.010 A |
| 30 to 300 mA | ± 0.010–0.013 A | |
| 300 mA to 3 A | ± 0.013–0.053 A | |
| 3 to 10 A | ± 0.053–0.174 A | |
| Resistance, Insulation Resistance Tester, Earth Tester Method ION.WI-60M |
Up to 400 Ω | ± 2.365 Ω |
| 400 Ω to 4 kΩ | ± 2.365–0.239 Ω | |
| 4 to 40 kΩ | ± 0.239–0.523 Ω | |
| 40 to 400 kΩ | ± 0.523–2.363 Ω | |
| 400 kΩ to 4 MΩ | ± 2.363–0.484 Ω | |
| 4 to 40 MΩ | ± 0.484–0.535 Ω | |
| Frequency, Capacitance, Inductance, Watt (Power) Method ION.WI-60M |
Frequency up to 100 kHz | ± 5.910–6.13 Hz |
| Capacitance 1 nF–1000 µF | ± 0.11 % | |
| Inductance 100 µH–100 mH | ± 0.11 % | |
| Voltage 0–600 V | ± 0.22 % | |
| Current 0–1000 A | ± 0.22 % |
Mechanical — Pressure & Vacuum
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Analog/Digital Pressure & Vacuum Gauge, Pressure/Vacuum Transmitter, Switch, Sensor, Safety Valve, Float Valve, Pressure Measuring Equipment, Dead Weight Tester (Pneumatic/Hydraulic), Hydrotest, Pressure/Vacuum Pump, Snap Button Tester, Bursting Strength Tester (In Lab & On Site) Method ION.WI-30M / ION.WI-31M |
−0.95 to 0 bar | ± 0.006 bar |
| 0 to 30 bar | ± 0.008 bar | |
| 0 to 450 bar | ± 0.012 bar | |
| 0 to 700 bar | ± 0.036 bar | |
| 0 to 1000 bar | ± 0.036 bar | |
| Manometer, Differential Pressure Gauge / Transmitter, Barometer (Lab & Onsite) Method ION.WI-32M |
−1000 to 2000 mbar | ± 0.012–0.018 mbar |
| 300 to 1100 hPa | ± 1.9 hPa |
Mechanical — Mass & Weight
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Standard Weights (In Lab & On Site) Method ION.WI-01M |
1 mg | ± 0.006 mg |
| 2 mg | ± 0.006 mg | |
| 5 mg | ± 0.006 mg | |
| 10 mg | ± 0.008 mg | |
| 20 mg | ± 0.01 mg | |
| 50 mg | ± 0.012 mg | |
| 100 mg | ± 0.016 mg | |
| 200 mg | ± 0.02 mg | |
| 500 mg | ± 0.025 mg | |
| 1 g | ± 0.03 mg | |
| 2 g | ± 0.04 mg | |
| 5 g | ± 0.05 mg | |
| 10 g | ± 0.06 mg | |
| 20 g | ± 0.08 mg | |
| 50 g | ± 0.1 mg | |
| 100 g | ± 0.16 mg | |
| 200 g | ± 0.3 mg | |
| 500 g | ± 2.5 mg | |
| 1 kg | ± 5 mg | |
| 2 kg | ± 10 mg | |
| 5 kg | ± 25 mg | |
| 10 kg | ± 50 mg | |
| 20 kg | ± 100 mg | |
| 50 kg | ± 200 mg | |
| Digital Balance / Scale, Semi-Micro Balances, Analytical Balances, Electronic Balance, Bond Tester, Truck Scale, Lift, Crane, Perspirometer (In Lab & On Site) Method ION.WI-02M |
1 mg to 220 g | ± 0.12 mg |
| Up to 6 kg | ± 0.4 g | |
| Up to 100 kg | ± 1.2 g | |
| Up to 500 kg | ± 1.2 g | |
| Up to 2000 kg | ± 4.5 g | |
| Up to 5000 kg | ± 25 g |
Mechanical — Volume
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Micropipette, Multichannel Micropipette, Auto Pipette, Micro Syringe, Auto Dispenser, Glass Pipette, Burette, Volumetric Flask, Measuring Cylinder, Beaker, Jars, Pycnometer, Karl Fischer, Conical Flask (In Lab & On Site) Method ION.WI-03M |
0 to 100 µl | ± 0.1 µl |
| 100 to 500 µl | ± 0.22 µl | |
| 500 to 1000 µl | ± 0.32 µl | |
| 1 to 5 ml | ± 2 µl | |
| 5 to 10 ml | ± 4 µl | |
| 10 to 50 ml | ± 5 µl | |
| 50 to 100 ml | ± 6 µl | |
| 100 to 500 ml | ± 0.2 ml | |
| 500 to 1000 ml | ± 0.5 ml | |
| 1000 to 5000 ml | ± 0.8 ml | |
| 5000 to 20000 ml | ± 1.2 ml |
Mechanical — Dimension
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Digital Caliper / Vernier Caliper Method ION.WI-11M |
0 to 300 mm | ± 10 µm |
| 0 to 1000 mm | ± 0.75 µm | |
| Steel Scale, Measuring Tape, Shrinkage Template & Ruler Method ION.WI-12M |
0 to 1000 mm; up to 50 m | ± 200(√L/1000) µm — L in mm |
| Micrometer (External / Inside / Outside / Depth) Method ION.WI-13M |
0 to 25 mm | ± 1 µm |
| Height Gauge Method ION.WI-14M |
0 to 1000 mm | ± 15 µm |
| Digital Thickness Gauge, Ultrasonic Thickness Gauge, Coating Thickness Gauge, Dial Indicator, Gauge Block Set, Sharp Point Tester, Depth Gauge, Sharp Edge Method ION.WI-18M |
0 to 25 mm | ± 7 µm |
| 0 to 100 mm | ± 9 µm | |
| Bore Gauge, Feeler Gauge, Foils, Lever Dial Gauge Method ION.WI-19M |
0 to 2 mm | ± 1.5 µm |
| Angle Gauge Block, Set Square, T-Square, Triangle Set, Circular Protractor, Bevel Protractor, Angle Protractor Method ION.WI-20M |
0 to 360 ° | 0.08′ of arc |
| Go & No-Go Gauge, Slip Gauge Set, Test Sieves, Depth Gauge Method ION.WI-21M |
0 to 40 mm | ± 13 µm |
| Microscope / Profile Projector Method ION.WI-25M |
X ruler 1 mm/100, 1 Div. = 0.01 mm | 0.35 % |
| Velocity — Bio-Safety Cabinet, Laminar Air Flow Method ION.WI-26M |
0.4 to 30 m/s | 0.12 m/s |
| Metal Detector Machine, Test Card, Scanner Method ION.WI-27M |
0.8, 1.0 & 1.2 mm (Fe & Non-Fe) | 0.02 % |
Mechanical — Speed
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Non-Contact / Contact Tachometer, Travel Speed, Surface Speed, Amplitude, Elongation, Shaker, Centrifuge Machine, Martindale & Pilling Tester, Wrap Reel Method ION.WI-16M |
5 to 60000 RPM | ± 0.5 rpm |
| 0 to 2000 mm/min; up to 50 m/min | ± 0.2–0.5 m/min |
Mechanical — Time
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Digital/Analog Timer, Stopwatch, Time Interval Meter, On-off Timer, Breaker Timer, Relay Timer, Flammability Tester, Crockmeter, Spray Rating, Stretch & Recovery Tester Method ION.WI-22M |
1 s to 24 hr | ± 0.0059 hr |
Mechanical — Sound
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Sound Level Meter, Sound Level Calibrator (1 kHz) Method ION.WI-17M |
94, 104 & 114 dB | ± 0.6 dB |
Mechanical — Light & Lux
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| UV/Lux Meter, Light Box, Light Source, Pilling Viewer, Pili Scope, Fabric Inspection Machine, Light Shade, Grey Scale, Irradiance Meter, Pyranometer, Solar Meter Method ION.WI-23M |
10 to 20000 Lux | ± 0.72 % of reading |
Mechanical — Force, Hardness & Torque
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Uniaxial Testing Machine (Universal, Tensile, Compression) & Load Cell with Indicator, Titan 5, Elmatear, Ele Twist Method ION.WI-36M |
1 cN to 1 kN | ± 0.02 % |
| 1 to 50 kN | ± 0.2 % | |
| 50 to 500 kN | ± 0.26 % | |
| 500 to 2000 kN | ± 0.30 % | |
| Push Pull Tester, Force Gauge, Tension Meter, Hardness Tester, Shore Hardness Tester Method ION.WI-37M |
0 to 30 kgf | ± 0.1–0.5 gf |
| 0 to 50 kgf | ± 0.1–0.8 gf | |
| Up to 500 kgf | ± 0.05–0.1 gf | |
| 0–100 HA/HD | ± 0.42 % | |
| 10–650 HBW, 5–3000 HV, 0–500 lbf | ± 0.5 % | |
| Torque Meter, Torque Analyzer, Torque Driver, Torque Wrench Method ION.WI-38M |
1.5 to 100 kgf.cm | ± 0.32 % |
| 0.15 to 10 N.m | ± 0.32 % | |
| 10 to 3000 N.m | ± 0.21 % |
Mechanical — Flow
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| Water / Oil / Steam / Ultrasonic / Gas Flow Meter, Transmitter, Sensor, Regulator Method ION.WI-41M |
0 to 15000 m³/hr | ± 0.18 % |
Chemical & Analytical Meters
| Instrument / Gauge | Measurement Range | Expanded Uncertainty (k=2) |
|---|---|---|
| pH Meter Method ION.WI-42M |
0 to 14 pH | ± 0.34 % |
| Conductivity Meter Method ION.WI-43M |
0 to 1999 µS/cm | ± 0.51 % |
| ORP Meter Method ION.WI-44M |
0 to 1000 mV | ± 0.02 % |
| TDS Meter Method ION.WI-45M |
0 to 5000 ppm | ± 0.32 % |
| DO Meter Method ION.WI-46M |
0 to 200 % | ± 0.22 % |
| Chlorine Meter Method ION.WI-47M |
0 to 200 ppm | ± 0.18 % |
| Viscosity Meter Method ION.WI-48M |
0 to 10000 cP | ± 0.02 % |
| Density Meter / Hydrometer Method ION.WI-49M |
0 to 2.0 g/ml | 0.0002–0.0052 g/ml |
Transcribed from the BAB Scope of Accreditation for ION Engineering Pvt. Ltd. (Certificate No. 02.016.22, ISO/IEC 17025:2017, accredited 29 November 2022, issued 24 December 2025, valid until 28 November 2028). Expanded uncertainty is stated at a coverage factor of k=2. Contact us for the current signed accreditation schedule.
Validation & Specialised Work We Also Take On
Quoted against a customer-specific, engineer-approved protocol rather than the fixed accreditation schedule above.
Pharmaceutical Validation
Clean room, HVAC & AHU validation
Laminar air flow testing, ACPH air change calculation, installed HEPA filter leak (scan) testing, smoke pattern and airflow visualisation studies, non-viable particle count, recovery testing, light intensity, sound level and ventilation measurement, air capture hood testing.
Mapping & Qualification
Autoclave, oven, cold room & deep freezer
Temperature and humidity mapping, autoclave heat penetration (F0), dry heat depyrogenation (FH), cold room and deep freezer validation, furnace validation, stability chamber mapping and warehouse mapping.
Analytical & QC Instruments
HPLC, GC & laboratory equipment
HPLC and GC systems, UV-Vis spectrophotometers, moisture balances and moisture analysers, Karl Fischer auto-titrators, flame photometers, dissolution and disintegration testers, friability testers, tablet hardness testers, test sieves, muller machines.
Specialised & Process Equipment
Rotameters, microscopes & more
Rotameters, flow meters, illumination meters, leak testers, colony counters, centrifuges, incubators, HART communicators, phase angle calibrators, kV meters, power factor meters, oscilloscopes and other production or QC instruments on request.
Do Not See Your Instrument?
Where an instrument requires a manufacturer-specific method, we build and validate the procedure with you before the first calibration — and add it to your calibration master plan.
Support that comes with the scope
- Free advice on interval, method and acceptance criteria
- Asset register creation and calibration master plan
- Uncertainty budgets for your own internal laboratory
- Repair, adjustment and post-repair calibration in one visit
- Reference standards and calibrators supplied on request
Frequently Asked Questions
Is this calibration scope accredited, or just a capability list?
It is our current BAB (Bangladesh Accreditation Board) accredited scope under ISO/IEC 17025:2017, Certificate No. 02.016.22, valid until 28 November 2028. Every range and uncertainty value on this page is transcribed directly from that accreditation schedule.
What pressure range can you calibrate?
Our accredited pressure and vacuum scope covers -0.95 bar to 1000 bar for gauges, transmitters, switches, dead weight testers and safety valves, plus -1000 to 2000 mbar and 300-1100 hPa for manometers, differential pressure gauges and barometers.
What is your accredited temperature range and uncertainty?
Thermometers, sensors and indicators are covered from -40 degC to 650 degC with uncertainty from +/-0.07 degC, and ovens, autoclaves, baths, chambers and furnaces from -40 degC to 1500 degC with uncertainty from +/-0.08 degC, depending on the specific range.
Do you calibrate weighing balances and standard weights up to 5000 kg?
Yes. Standard weights are accredited from 1 mg to 50 kg, and digital balances, analytical balances, platform scales, truck scales and crane scales are accredited up to 5000 kg.
Can you calibrate an instrument that is not on this list?
In most cases, yes. We regularly calibrate specialised production and QC equipment outside the strict accredited scope shown above, and pharmaceutical validation work (cleanroom, HVAC, mapping) under a customer-specific, engineer-approved protocol. Send us the make and model and we confirm the same day.
Where can I see the official accreditation schedule?
The full schedule is available on request, and a summary is published on the Bangladesh Accreditation Board’s own directory of accredited CABs. See our Accreditation page to verify our certificate directly on the BAB government website.