Precision Weighing Balances
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310g x 0.1mg at a great price made by A&D in Japan, so you know it is high quality and built to last. Compare the features of the HR-300i verses those pricey European Balances and ask yourself why would your spend so much more when A&D offers it all for much less. Large weighing chamber for easy access, range blanking key, and a quick response time of 2.5 seconds. Sealed keypad protecting against spills and dust. System diagnostics and a sturdy aluminum alloy frame that won't chip, crack, to assure many years of reliable use. Read all the specifications in detail and even download the HR-Series instruction manual to help you with your buying decision.

When the A&D HR300i is first installed, or is moved to another location, the analytical balance must be calibrated to ensure accurate weighing results. Every location in the world is positioned differently to "magnetic north" and therefore the acceleration of gravity is slightly different.Add to this barometric pressure effects the acceleration of gravity depending upon your location's altitude to sea level.

The AND HR300i requires the purchase of a optional external 300 gram calibration mass to perform calibration. If you are looking for a weight set be sure to review this Class 1 tolerance Troemner 12 piece weight set (500g-1g). We always recommend that you purchase the calibration weight when you purchase the balance. You can learn more about calibration weights, class weights and the tolerances at

Never heard of A&D? A&D is currently the world's third largest manufacturer of laboratory and industrial balances with 20% of the world market share. Established in 1977, A&D Company, Ltd. has grown from developing digital-to-analog converters for companies such as Nippon Telegraph & Telephone, to becoming a world class producer of advanced measuring equipment for medicine, science and industry. A&D established itself as a multinational corporation, with offices in the United States, Great Britain, Germany, Australia, Korea, Taiwan and Russia, and as a world leader in measurement equipment. The company's competitive edge is the direct result of its ability to leverage strong engineering and manufacturing capabilities, while incorporating highly accurate analog and digital technologies into broad product lines focused to provide customers with the greatest value.

A&D HR-300i lab balance is equipped with the RS-232 interface can use AND's WinCT data acquisition software data communication software. Other manufacturer's charge you $100's more for either their balance communication software or a third party software but not with the A&D you can download WinCT balance software free.

High performance and quality is shown with a 5 year manufacturer warranty. Review the manufacturer warranty from other manufacturer's and you'll see their warranty is a lot less. Plus if you ever need repair A&D Weighing has two facilities in the USA located in Georgia and California for fast turn around.

A&D is a technology driven, market oriented, global manufacturer of measurement equipment; sensitive to multi-national needs, and always providing ...Clearly a Better Value.

Free shipping UPS Ground in the lower 48 states on all HRi analytical balances at

A&D Weighing HR300i Analytical Balance

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Brand Model Capacity Readability
A&D Weighing HR300i Analytical Balance 310 g 0.0001 g
Add. Features
  • Carats
  • Grains
  • Milligrams
  • Ounces
  • Pennyweight
  • Grams
  • Troy Ounces
  • Parts Counting
  • RS-232c
  • Below Weighing
Comparable Scales

Scientech SA310 analytical balances - $2699.95

A&D Weighing analytical balance GH-300 - $3812.00

Ohaus EX324 digital lab balance - $4459.95

Ohaus analytical balance DV314C - $4560.25

Sartorius Secura224-1S lab balance - $2829.95

A&D Weighing HR250AZ pharma balance - $1967.00

Sartorius Cubis MSA324S-100-DU - $8275.50

Sartorius Analytical Balance ENTRIS224-1S - $1616.00

A&D Weighing GR-300 lab balance - $3240.00

A&D Weighing HR-250A analytical lab - $1605.00

Sartorius MSE524S laboratory balance - $8104.50

Sartorius Practum 224-1S lab balance - $1794.50

Sartorius Quintix 224-1S lab balance - $2821.26

Mettler Toledo JS1603C/A diamond scale - $2199.00
MSRP: $4185.00
YOU PAY $3348.00

Analytical balanceAll HR Series are fully LIMS compatible when purchased with the optional RS-232C/current loop.  Built in GLP software with balance ID input routine for GLP applications allows calibration output verification to computer or AD-8121 printer.  Full tare range to capacity either manually or via computer.  Large weighing chamber for easy access, range blanking key, and a quick response time of 2.5 seconds.  Sealed keypad protecting against spills and dust.  System diagnostics and a sturdy aluminum alloy frame that won't chip, crack, to assure many years of reliable use.

Laboratory BalancesHR-60 Analytical Balances offer 0.1 mg readability with an exceptional combination of remarkable features at affordable prices.

Your Cost $3348.00
S&H via UPS Ground FREE in the lower 48 states of USA
The HR-300i is a nice analytical balance and has been around for over a decade. Some people comment the HR300i is outdated and lacks a true USB interface, touchscreen display, SQmin for compliance with regulatory requirements, the HR300 is too large of a footprint consuming limited laboratory bench space. If these issues matter to you then be sure to review the Sartorius Secura 324-1S that offers the lastest in weighing technology.
Gram (g)
310 x 0.0001
Milligram (mg)
310000 x 0.1
Decimal Ounce (oz)
10 x 0.00001
Troy Ounce (ozt)
9.9 x 0.00001
Pennyweight (dwt)
199 x 0.0001
Carat (ct)
1550 x 0.001
Momme (mm)
82 x 0.0001
Grain Unit (GN)
4784 x 0.002
Percentage Min. Division 0.01%, 0.1% or 1% (auto prompt)
Counting Min. Weight 0.1 mg
Linearity 0.0003 g
Stabil. Time (typically) 3.5 seconds 
Repeatability/Std. Dev. 0.0002 g 
Sensitivity Drift 2ppm / C (10C~30C / 50F~ 86F)
Display Refresh 5 times per second (stable) / 1
10 times per second (unstable)
Pan Size Ø 90mm / 3.6 in
(mm) 217 (W) X 429 (D) X 316 (H)
(inches) 8.5 (W) X 16.9 (D) X 12.4 (H)
Breeze Break
(mm) 183 (W) X 164 (D) X 250 (H)
(inches) 7.2 (W) X 6.5 (D) X 9.8 (H)
Operating Temp. 5C~40C / 41F~104F RH less than 85%
Weight (Approx.) 8.0 kg. / 17.6 lb. 
Power 120 VAC (AC Adapter) 50Hz/60Hz
Standard Accessories Manual, AC Adapter, Protective Display Cover, RS232 Interface
Cal. Mass (Optional) 200g or 300g 
Optional Accessories NiCad Battery, External Calibration mass, Printer
A&D Lab AnalyzersBrochure Lab Analytical Balances Click Here To Download For More Info
Analytical BalanceData Brief Analytical Balances Download For Additional Specifications
Download the HR Instruction Manual (1.02MB) now Lab Balances 
The instruction manual contains detail information regarding calibration, additional features and keypad functions.  We also have the manuals for the Density Determination Kit (523KB), 20 mA Current Loop Interface(417KB) & RS-232C (417KB) to assist in your buying decision.
A&D HR Series Analytical Balances
Download the User Manual (1.02 MB)

(select the model & any of the options below
and then click the "BUY HERE" image)


Aftermarket low cost Specific Gravity Kit $139.95
AD-1653 Density Determination Kit $495.00
AD-1682 Rechargeable Battery Pack $645.00
AD-1683 - Static Eliminator $1195.00
AD-8920 - Universal Remote Display $250.00
AD-8922 - Remote Controller $600.00
AD-100-2 Digital Scale Anti-theft Device $73.00
SW:128 - Foot Switch $69.00
TB:137 - 220V AC $49.00
AD-8121B Multi-Function Printer $850.00
RS-232 to pc (9 pin connector - DB9) $35.00

USB to 9 pin RS-232 Converter $53.00
Granite Isolator 13 x 15 inch $569.00

   calibration weights mass set traceable weight weights

Optional Calibration weight and weight sets.

200g ASTM Class 1 (± 0.50 mg) with NO Cert $80.00
200g ASTM Class 1 (± 0.50 mg) with NVLAP Cert $235.00
300g Calibration Weight Class 1 with NVLAP (± 0.75 mg) $237.00
300g Calibration Weight Class 2 with NVLAP (± 1.5 mg) $186.00
1g-200g 10 piece Class 1 Mass Set with NVLAP Cert $1210.00
9 pc. Weight Set (100 g - 1 g) Class 1 with NVLAP $1042.00
1mg-100g 21 Piece Class 1 Weight Set with NVLAP Cert $2059.00
Cal-Paks 200g, 20g, 200mg Class 1 with NVLAP $379.00
Cal-Paks 200g, 20g, 2g Class 1 with NVLAP $386.00

Note: See our complete line of certified weights and weight sets here.
Weighing Pan
YWP06G Weigh Pan 3.25" Dia. x 0.75" depth $30.00
Select from 5 different Analyticals to meet your specific weighing needs

Cap (g) x Read (g)

MSRP Price

60 x 0.0001 g

$1950.00 $1502.00

120 x 0.0001 g

$2420.00 $1863.00

210 x 0.0001 g

$2575.00 $1983.00
HR-202i 210 x 0.0001 g
42 x 0.00001 g
$4645.00 $3716.00
HR-300i 310 x 0.0001 g $4185.00 $3348.00

Need more accuracy? Do you need a 5 decimal place gram balance? The Sartorius Secura and Quintix semi microbalances are amazing. In the YouTube video above you will see the Sartorius Secura225D-1S semi microbalance [0-120g x 0.01mg] [120-220g x 0.1mg]. We highlight the intuitive operation using the SmartTouch user interface that is so easy to use you'll probably never need to reference the user manual. We also demonstrate the ergonomic draftshield and show how easy it is to dismantle the balance for easy cleaning.

Also you'll get a close up view of the new "collection container". The collection container is designed to keep the spill from entering the lab balance that could cause potential damage to the balance. Sartorius' revolutionary "collection container" features a rimmed design to keep the spill from entering if you happen to spill any liquid or granular samples while weighing.

If the Secura225D-1S is more balance than you need for your weighing application then be sure to see the Secura 125-1S, Sartorius Quintix125D-1S or Sartorius Quintix65-1S. Sartorius is our #1 selling laboratory weighing balances since they are the leaders in building high quality weighing instruments.
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