A&D EJ-303 Newton Precision Balance, 310 g x 0.001 g, Breeze Break, Battery or AC

Description

A&D EJ-303 Newton Precision Balance: 310 g × 0.001 g

The A&D Weighing EJ-303 is the highest-capacity milligram model in A&D’s Newton EJ series. It weighs up to 310 g in 0.001 g steps and comes with an anti-static breeze break that keeps air currents from disturbing milligram readings.

Run it on the included AC adapter, or go cordless on four AA batteries (not included). The 16 mm backlit LCD is easy to read, and counting with ACAI, percent, display hold, and accumulation functions are built in. Add the optional EJ-02 USB or EJ-03 RS-232C interface to send results to a PC or printer.

Key Features

• 310 g × 0.001 g with 0.003 g repeatability and ±0.003 g linearity
• Breeze break included for stable milligram readings
• Ø110 mm stainless steel pan
• 16 mm backlit LCD with stability, zero, net, and battery indicators
• Counting with ACAI, percent, display hold, and accumulation (M+)
• AC or battery power: 4 AA batteries (not included)
• Units: g, oz, ozt, ct, dwt, grains, pcs, %
• Optional EJ-02 USB or EJ-03 RS-232C (not included)
• 5-year A&D warranty

Applications

Labs and Schools

Milligram weighing for sample prep, chemistry labs, and student experiments.

Reloading

Weigh powder charges and bullets in grains with a breeze break to block drafts.

Jewelry and Gems

Weigh gemstones, findings, and small jewelry in carats, pennyweight, or troy ounces. For buying or selling precious metals by weight, choose an NTEP Class II balance such as the A&D FX-200iN.

A&D EJ-303 Specifications

What’s in the Box

• A&D EJ-303 balance with breeze break
• Ø110 mm stainless steel weighing pan
• AC adapter
• Instruction manual

AA batteries, a 300 g calibration weight, and the USB or RS-232C interface are not included.

Compatible Accessories

• 200 g Class 1 calibration weight kit (sold separately, not included)
• A&D EJ-02 USB interface with cable (sold separately)
• A&D EJ-03 RS-232C interface (sold separately)
• A&D TB-662 original AC adapter: spare or replacement

Related A&D Balances

• A&D EJ-123, 120 g × 0.001 g with breeze break
• A&D FX-300i, 320 g × 0.001 g
• A&D FZ-300i, 320 g × 0.001 g with internal calibration
• A&D EJ-200, 210 g × 0.01 g

Calibration Options from MNM Scales

Get your EJ-303 calibrated and ready to use on day one. Add either option to your order, and our TDA-certified technicians calibrate it in-house before it ships:

• In-house calibration with certificate, using NIST-tested weights: $95. We calibrate and verify your EJ-303 with NIST-tested weights and include a calibration certificate, so it arrives set up and accurate. Add $95 calibration to cart
• NIST calibration with a NIST-traceable certificate: $395. Full calibration documented on a NIST-traceable certificate, for labs, reloaders, and audits that need a paper trail. Add $395 NIST calibration to cart

We also recalibrate scales and balances you already own, by mail-in or in our shop, with on-site service across Houston and the surrounding area. Request calibration or call (832) 290-3120.

Frequently Asked Questions

Does the A&D EJ-303 include a breeze break?

Yes. The anti-static breeze break is included.

Does the EJ-303 come with batteries?

No. It runs on the included AC adapter, or on 4 AA batteries (not included).

What calibration weight does the EJ-303 use?

A 300 g weight is the factory setting (not included). Or have us calibrate it before it ships.

EJ-303 vs. FX-300i: which should I choose?

Both read 0.001 g. The EJ-303 runs on AA batteries; the FX-300i settles in about 1 second and has RS-232C built in.

Why Buy Your A&D Balance from MNM Scales?

MNM Scales is an authorized A&D Weighing dealer and one of the largest scale distributors in the country, with one of the largest selections of balances and scales in every category. We offer free shipping in the continental U.S., in-house calibration and certificates, and real help choosing the right model from our Houston-area team. Wholesale and volume buyers can contact us for a quote.