Original price was: $4,185.00.$2,988.00Current price is: $2,988.00.
Discontinued: A&D has discontinued the HR-300i. The closest current model is the A&D GF-324A. The GF-324A has the same 320 g × 0.1 mg range and external calibration, plus USB, impact shock detection, and password protection. It ships free in the continental U.S.
Shop the A&D GF-324A (replaces the HR-300i)
A&D HR-300i reference specs:
A&D HR-300i analytical balance: 320 g × 0.1 mg with external calibration.
- 320 g capacity, 0.1 mg readability
- Repeatability 0.2 mg, linearity ±0.3 mg
- External calibration with a 100, 200, or 300 g weight
- Ø90 mm pan with breeze break
Calibrate your HR-300i with a certificate (mail-in or in our Houston-area shop), or add calibration to your GF-324A order:
Add In-House Calibration + Certificate ($95) Add NIST Calibration + Certificate ($395)
Description
A&D HR-300i Analytical Balance: 320 g × 0.1 mg (Discontinued, Replaced by the GF-324A)
The A&D HR-300i is discontinued. The closest current model is the A&D GF-324A, which has the same 320 g × 0.1 mg range and external calibration, plus USB, impact shock detection, and password protection. The specs below are kept for reference and for owners of the HR-300i.
The A&D Weighing HR-300i was the 320 g, 0.1 mg model in A&D’s HR-i series of analytical balances, with a Ø90 mm pan, breeze break, and external calibration. A&D has discontinued it; the Apollo GF-324A is the closest current model.
Key Features
- 320 g capacity, 0.1 mg readability
- Repeatability 0.2 mg, linearity ±0.3 mg
- External calibration with a 100, 200, or 300 g weight
- Ø90 mm pan with breeze break
- RS-232C with GLP output
- Counting and percent modes
A&D HR-300i Specifications (Reference)
| Brand / Series | A&D Weighing / HR-i (discontinued) |
|---|---|
| Model (MPN) | HR-300i |
| Closest current model | A&D GF-324A Apollo |
| Capacity | 320 g |
| Readability | 0.1 mg (0.0001 g) |
| Repeatability (std. dev.) | 0.2 mg |
| Linearity | ±0.3 mg |
| Stabilization time | Approx. 3.5 seconds (FAST) |
| Sensitivity drift | ±2 ppm/°C (10 to 30 °C) |
| Calibration | External, 100 g, 200 g, or 300 g weight |
| Weighing pan | Ø90 mm |
| Dimensions (W × D × H) | 217 × 442 × 316 mm |
| Net weight | Approx. 7.9 kg |
| Interface | RS-232C |
| Power | AC adapter |
Calibration for the HR-300i and GF-324A
Already own an A&D HR-300i? Our TDA-certified technicians calibrate it in-house, by mail-in or in our Houston-area shop, and include a certificate. Buying the replacement GF-324A? Add calibration to that order and it ships calibrated:
- In-house calibration with certificate, using NIST-tested weights: $95. We calibrate and verify your HR-300i 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, 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.
Frequently Asked Questions
Is the A&D HR-300i discontinued?
Yes. A&D has discontinued it; the GF-324A is the closest current model.
What should I buy instead of the A&D HR-300i?
The A&D GF-324A, with the same 320 g × 0.1 mg range and external calibration, plus USB, impact shock detection, and password protection. Call us at (832) 290-3120 and we’ll help you move to the new model.
Can MNM Scales calibrate my HR-300i?
Yes. Choose in-house calibration with a certificate, using NIST-tested weights, for $95, or NIST calibration with a NIST-traceable certificate for $395.
Additional information
| Weight | 20 kg |
|---|---|
| Brand | A&D Weighing |










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