EJ Newton Series Portable Balances
The EJ Newton Series delivers affordable precision weighing for milligram measurements. Built to last and backed by a 5-year warranty, these balances provide convenient, accurate weighing for students, researchers, and industrial users. With thousands of units in laboratories and production facilities worldwide, the EJ Series has proven its reliability across diverse applications.
Key Applications
- Industrial
- Pharmacy
- Education
Simple Operation
The EJ-303 and EJ-123 make milligram measurements as easy as 1-2-3:
- Plug-in and warm-up the balance
- Level the balance by adjusting the feet
- Start weighing
Advanced Functions
EJ Series balances include standard functions typically found in balances costing twice as much:
- Gravity correction
- Accumulation M+ Function
- GLP/GMP/GCP/ISO Compliant
- Auto Counting Accuracy Improvement ACAI
- Adjustable response characteristics
- Display Hold
- Battery Operation
- Piece Counting
- Percent Weighing
- External Calibration
Available Models
| Model |
Capacity |
Readability |
| EJ-123 |
120 g |
0.001 g |
| EJ-303 |
310 g |
0.001 g |
| EJ-120 |
120 g |
0.01 g |
| EJ-200 |
210 g |
0.01 g |
| EJ-300 |
310 g |
0.01 g |
| EJ-410 |
410 g |
0.01 g |
| EJ-610 |
610 g |
0.01 g |
| EJ-1202 |
1200 g |
0.01 g |
| EJ-3002 |
3100 g |
0.01 g |
| EJ-1500 |
1500 g |
0.1 g |
| EJ-2000 |
2100 g |
0.1 g |
| EJ-3000 |
3100 g |
0.1 g |
| EJ-4100 |
4100 g |
0.1 g |
| EJ-6100 |
6100 g |
0.1 g |
Design Features
- Clear LCD display with 16 mm high characters and backlight
- 127 x 140 mm stainless steel weighing pan for EJ-1200 to EJ-6100
- 110 mm round pan for EJ-610 and below
- 4 leveling feet
- Level bubble
- STABLE, NET, and ZERO indicators
- PRINT, SAMPLE, RE-ZERO, ON:OFF, and UNITS keys
- 7 units-of-measure, %, counting and density (specific gravity) functions
- Auto power-off function
- Security slot
- Breeze break (draft shield) with anti-static coating standard with EJ-123 and EJ-303
- AC adapter jack (AC adapter included)
- Uses 4 x AA batteries
- Calibration switch cover (bottom)
Complete Specifications
| Specification |
EJ-123 |
EJ-303 |
EJ-120 |
EJ-200 |
EJ-300 |
EJ-410 |
EJ-610 |
EJ-1202 |
EJ-3002 |
EJ-1500 |
EJ-2000 |
EJ-3000 |
EJ-4100 |
EJ-6100 |
| Weight capacity |
120 g |
310 g |
120 g |
210 g |
310 g |
410 g |
610 g |
1200 g |
3100 g |
1500 g |
2100 g |
3100 g |
4100 g |
6100 g |
| Readability |
0.001 g |
0.001 g |
0.01 g |
0.01 g |
0.01 g |
0.01 g |
0.01 g |
0.01 g |
0.01 g |
0.1 g |
0.1 g |
0.1 g |
0.1 g |
0.1 g |
| Repeatability (Std. deviation) |
0.003 g |
0.003 g |
0.01 g |
0.01 g |
0.01 g |
0.01 g |
0.01 g |
0.03 g |
0.03 g |
0.1 g |
0.1 g |
0.1 g |
0.1 g |
0.1 g |
| Linearity |
±0.003 g |
±0.003 g |
±0.01 g |
±0.01 g |
±0.02 g |
±0.02 g |
±0.02 g |
±0.03 g |
±0.03 g |
±0.1 g |
±0.1 g |
±0.2 g |
±0.2 g |
±0.2 g |
| Calibration weight (factory setting) |
100 g |
300 g |
100 g |
200 g |
300 g |
400 g |
600 g |
1000 g |
3000 g |
1500 g |
2000 g |
3000 g |
4000 g |
6000 g |
| Weight |
Approx. 1160 g |
Approx. 1160 g |
Approx. 850 g |
Approx. 850 g |
Approx. 850 g |
Approx. 850 g |
Approx. 850 g |
Approx. 1490 g |
Approx. 1490 g |
Approx. 1100 g |
Approx. 1100 g |
Approx. 1100 g |
Approx. 1100 g |
Approx. 1100 g |
General Specifications
| Parameter |
Value |
| Sensitivity drift |
±20 ppm / °C (10°C-30°C / 50°F-86°F) |
| No. of samples |
5, 10, 25, 50 or 100 pieces |
| Min. unit weight |
0.001 g (EJ-123/303), 0.01 g (0.01 g models), 0.1 g (0.1 g models) |
| Min. % display |
0.01% (EJ-123/303, 0.01 g models), 0.1% (0.1 g models) |
| Min. 100% weight |
0.1 g (EJ-123/303), 1 g (0.01 g models), 10 g (0.1 g models) |
| Display |
7 segment LCD display with backlight (Character height 16 mm) |
| Display update |
10 times per second |
| Operating temp. |
-10°C-30°C, less than 85% R.H. (non-condensing) |
| Power supply |
AC adapter (included) or 4 x "AA" size dry-cell batteries (Approximately 70 hours backlight off, alkaline batteries) |
| Compliance |
GLP / GMP / GCP / ISO |
| Weighing pan size |
110 mm Ø (EJ-123 through EJ-610), 127 mm x 140 mm (EJ-1202 through EJ-6100) |
Units of Measure
N, g, oz, lb (select models), ozt (troy ounce), ct, dwt, GN
Options
- EJ-02C: USB interface with cable
- EJ-03: RS-232C interface
- EJ-07: Underhook for EJ-3000 to EJ-6100 (except for EJ-3002)
- EJ-08: Underhook for EJ-1500, EJ-2000
- EJ-11: Breeze break (Draft Shield)
- EJ-12: Carrying case (except for EJ-123/EJ-303, EJ-1202/3002)
- EJ-13: Density determination kit for EJ-120/EJ-200/EJ-300/EJ-410/EJ-610
Accessories
- TB:662: AC adapter 120V/220V (Replacement)
- TB:164: AC adapter 240V (Round prongs)
- AD-8127: Compact printer
- AX-KO2466-220: Cable
- AX-USB-9P: Serial to USB Adapter