Size & Specification Guide
Scientific products are selected by their dimensions and technical requirements. Use this checklist to compare the exact item before ordering.
Start with the product page
Check the model number and written specifications. A product photograph alone does not establish its actual size, pack quantity or compatibility. Ask us to confirm any missing measurement before ordering.
| Product group | What to confirm |
|---|---|
| Glassware & plasticware | Capacity in mL or L; height and diameter in mm; material; neck, joint or cap size; graduations; quantity per pack. |
| Test tubes & accessories | Tube diameter and length, working capacity, cap type, rack opening and compatibility with the intended instrument. |
| Meters & test kits | Parameter measured, measuring range, units, stated accuracy, probe or reagent compatibility and included accessories. |
| Microscopes | Head type, objective and eyepiece configuration, illumination, stage, camera connection and included accessories. |
| Balances & scales | Maximum capacity, readability, platform size, units, power supply and the calibration arrangements required for your application. |
| Laboratory equipment | External and chamber dimensions, capacity, electrical supply, operating range and available bench or floor space. |
| Models, tools & supplies | Overall dimensions, scale, material, supplied parts and the number of pieces included in the listed price. |
Keep the units consistent
- 1 cm = 10 mm
- 1 L = 1,000 mL
- 1 kg = 1,000 g
Check whether the listing gives outer dimensions, an internal dimension or a nominal capacity. These describe different aspects of a product.
Replacing an existing item?
Share the old item’s model number, label photo and relevant measurements. For a fitting or accessory, include the equipment model it must connect to.
Our team can help confirm the listed specifications; follow the manufacturer’s instructions for the intended application.
Need a hand?
Speak with A. Rahman Scientific Co. about your product or order.