The Globe Scientific GBB-502 is a portable precision balance with 500 g capacity and 0.01 g readability, externally calibrated. It weighs up to 500 g, for general sample, reagent and bulk-material weighing where milligram resolution is not needed. It is Globe’s economical, compact portable line, built for simple weighing. This listing includes an ISO/IEC 17025:2017 accredited calibration certificate.
Specifications
| Model | GBB-502-CT |
| Maximum capacity | 500 g |
| Readability | 0.01 g |
| Repeatability | 0.01 g |
| Linearity | 0.02 g |
| Calibration | External |
| Stabilization time | 3 sec |
| Pan size | 145 x 145 mm |
| Balance dimensions | 225 x 177 x 157 mm |
| Power | 100–240 V, 50–60 Hz |
| Battery | Runs on the supplied 9 V AC adapter or on six AA batteries (not included) |
| Certificate | ISO/IEC 17025:2017 accredited calibration certificate included |
| Country of origin | China |
| Guarantee | Globe Scientific 5-Year Replacement Guarantee |
GBB-series features
- Backlit LCD, stainless steel weigh pan and a rugged housing built for teaching labs through industrial use.
- Four dedicated keys for quick, simple weighing.
Also available: GBB-502 (without certificate)
Frequently asked questions
How is the GBB-502-CT calibrated?
The GBB-502 is calibrated externally with a reference weight of known mass. This listing includes an ISO/IEC 17025:2017 accredited calibration certificate.
Can the GBB-502-CT run without mains power?
Yes. It runs on the supplied 9 V AC adapter or on six AA batteries (not included).
What do the GBB-502-CT’s repeatability and linearity figures mean?
Repeatability of 0.01 g is how closely repeated weighings of the same load agree. Linearity of 0.02 g is the largest deviation from the true mass across the weighing range. Both are Globe’s specifications for the GBB-502.
How big is the GBB-502-CT’s weighing pan, and how fast does it settle?
The pan is 145 x 145 mm and Globe rates stabilization at 3 sec. The balance itself measures 225 x 177 x 157 mm.
