Specification sheet
13 Nov 2026
Sartorius · Semi-Micro Lab Balances
Secura Semi-Micro Balance
The Sartorius Secura semi-micro balances weigh up to 120 g (SECURA125-1S) or in two ranges, 120 g at 0.01 mg and 220 g at 0.1 mg (SECURA225D-1S dual-range). A built-in temperature management system, the One-Touch draft shield, isoCAL internal adjustment and SQmin USP monitoring make them dependable standard balances for regulated laboratories, with a touchscreen and Plug & Play data transfer.
Overview
The Sartorius Secura Semi-Micro Balances are standard laboratory balances with five-decimal-place readability (0.01 mg), built for regulated areas such as pharma and quality control. Two models cover the range:
SECURA125-1S: single range, capacity 120 g, readability 0.01 mg.
SECURA225D-1S (dual-range): 120 g with 0.01 mg readability, and up to 220 g with 0.1 mg readability.
Accurate in everyday conditions
A built-in temperature management system keeps the climate inside the weighing chamber stable.
The One-Touch draft shield is easy to use and compensates for even the slightest ambient effects.
The draft shield can be taken apart in a few steps and the rimmed base plate removed completely, and the plate is designed to catch all spills, which makes cleaning and preventing cross-contamination easy.
Made for regulated work
isoCAL adjusts the balance automatically, controlled by temperature and time, and the internal Cal Audit Trail documents every calibration and adjustment.
SQmin checks that your sample is within the balance operating range for USP compliance, warns you when the sample is below the minimum net weight and blocks data transfer until it is permissible.
Password-protected menu settings and selectable safety levels (high, standard or low) control who can change what and which data is processed further.
Easy to operate and connect
An interactive touchscreen with alphanumeric input makes entering sample IDs simple. The Start Assistant and SmartTouch interface let staff weigh straight away, and the mini USB port with Plug & Play and PC-Direct sends results to a computer or lab printer without additional software.
Performance and accessories
Typical repeatability is 0.03 mg (0.03 mg and 0.07 mg on the dual-range model) and typical stabilization time is 4 seconds or less (4 seconds or less and 1.5 seconds or less on the dual-range model). Sartorius thermal printers for GxP printouts and an external rechargeable battery pack are available as accessories.
Both models have a Ø 80 mm weighing pan and a weighing chamber 218 mm high, and measure 218 × 376 × 316 mm (W × D × H). Our team can help you choose the right model and accessories.
Specifications across the series
These are ranges for the whole line. Exact values depend on the model: please check the brochure or ask our team.
| Model | SECURA125-1S, SECURA225D-1S |
|---|---|
| Readability (mg) | 0.01 (SECURA125-1S) / 0.01 and 0.1 (SECURA225D-1S) |
| Weighing capacity (g) | 120 (SECURA125-1S) / 120 and 220 (SECURA225D-1S) |
| Pan size (mm) | Ø 80 |
| Repeatability, typical (mg) | 0.03 (SECURA125-1S) / 0.03 and 0.07 (SECURA225D-1S) |
| Stabilization time, typical (sec.) | ≤ 4.0 (SECURA125-1S) / ≤ 4.0 and ≤ 1.5 (SECURA225D-1S) |
| Weighing chamber height (mm) | 218 |
| Dimensions, W × D × H (mm) | 218 × 376 × 316 |
| Weighing system | EMC |
| Calibration and adjustment | Internal, automatic (isoCAL) |
| Display | Touchscreen with alphanumeric input |
| Interfaces | Mini USB (Plug & Play, PC-Direct) |
Key features
- 0.01 mg readability, up to 220 g SECURA125-1S weighs 120 g at 0.01 mg; the dual-range SECURA225D-1S adds 220 g at 0.1 mg.
- Temperature management and One-Touch draft shield Keeps the weighing chamber stable and compensates for slight ambient effects, with a draft shield that is easy to use and clean.
- isoCAL internal adjustment and Cal Audit Trail Temperature- and time-controlled internal adjustment, with every calibration and adjustment recorded for traceability.
- SQmin USP monitoring Checks the minimum sample weight against the balance operating range and blocks data transfer for samples that are too small.
- Protected menu and safety levels A password protects the menu settings, and high, standard or low safety levels control data transfer.
Key advantages
- Designed for regulated areas Password-protected menu, safety levels, Cal Audit Trail and SQmin support controlled, traceable weighing.
- Stable in difficult conditions Temperature management and the One-Touch draft shield keep results accurate with ambient influences.
- Simple data transfer Plug & Play through the mini USB port and PC-Direct send results to a computer without additional software.
- Easy to clean The draft shield dismantles easily and the rimmed base plate catches spills and lifts out completely.
- Quick to learn The Start Assistant, SmartTouch interface and touchscreen with alphanumeric input help staff get going straight away.