A&D GR-300 Gemini Analytical Balance, 310 g x 0.1 mg, Internal Calibration

Description

A&D GR-300 Gemini Analytical Balance: 310 g × 0.1 mg with Internal Calibration

The A&D Weighing GR-300 is the highest-capacity model in A&D’s Gemini GR series of analytical balances. It weighs up to 310 g in 0.1 mg steps and calibrates itself with a built-in motorized weight, both on demand and automatically when it detects a change in temperature.

An anti-static glass draft shield and stabilization software that reduces the effects of drafts and vibration keep readings steady. The GR series takes about 30% less bench space than earlier A&D analytical balances.

Key Features

• 310 g × 0.1 mg; repeatability 0.1 mg; linearity ±0.3 mg
• Automatic internal calibration with a motorized weight, plus one-touch and external calibration
• Anti-static glass draft shield with a large weighing chamber
• Ø85 mm stainless steel pan and spill guard
• Reverse LCD display and splash-proof 6-key membrane keypad
• RS-232C with GLP output, clock and calendar, and interval memory
• Counting, percent, and density modes
• Underhook and 5-year A&D warranty

Applications

Analytical and Pharmaceutical Labs

Weigh standards, samples, and active ingredients to 0.1 mg, with the capacity for heavier containers.

Quality Control and Teaching Labs

Document results through GLP output and give students a durable, easy-to-use analytical balance.

Jewelry and Gems

Weigh gemstones, findings, and jewelry in carats, pennyweight, and troy ounces. The balance is built for analytical weighing; for buying or selling precious metals by weight, choose an NTEP Class I balance such as the A&D GX-324AN.

A&D GR-300 Specifications

What’s in the Box

• A&D GR-300 balance with glass draft shield
• Ø85 mm weighing pan and spill guard
• AC adapter
• Instruction manual and quick reference card

A printer, density kit, and external calibration weights are not included.

Related A&D Analytical Balances

• A&D GR-200, 210 g × 0.1 mg
• A&D GR-120, 120 g × 0.1 mg
• A&D GR-202, dual range 42 g × 0.01 mg / 210 g × 0.1 mg
• A&D GX-324A Apollo, 320 g × 0.1 mg

Calibration Options from MNM Scales

Get your GR-300 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 GR-300 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 analytical labs, QC programs, 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.

Manuals and Documents

• A&D Gemini GR analytical brochure (PDF)
• A&D GR instruction manual (PDF)
• A&D GR quick start guide (PDF)

Frequently Asked Questions

Does the GR-300 have internal calibration?

Yes. A motorized built-in weight calibrates the balance at the push of a key and automatically when the temperature changes.

GR-300 vs. GR-200?

Same 0.1 mg readability. The GR-300 weighs up to 310 g; the GR-200 up to 210 g.

Is the GR-300 good for jewelry and pharmacy use?

Yes. It reads carats, grains, and troy ounces to 0.1 mg. For buying or selling precious metals by weight, choose an NTEP Class I balance such as the A&D GX-324AN.

Can MNM Scales calibrate the GR-300 before it ships?

Yes. Choose in-house calibration with a certificate, using NIST-tested weights, for $95, or NIST calibration with a NIST-traceable certificate for $395.

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.