Precision Weighing Balances
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The Sartorius GD503 has been discontinued and no longer in production as of May 2013. The Sartorius GD503 was phased-out and at this time there is no direct replacement under the Sartorius brand. Many pharmacies have purchased the AND FX-200iN or FX-300iN as an alternative, although these models are only 3 decimal places. We have no remaining stock on the GD503 and all information displayed herein is for archival and support purposes only.

Are you ready when the State Board of Pharmacy comes to make their unannounced visit to your pharmacy store to see you have a Legal for Trade scale? Pharmacies looking for a digital pharmacy balance easy to use, small footprint to save on counter space, draftshield to minimize air disturbances, high readability to lessen the need to aliquot, fast weighing results to save time, comply with the pharmacopeia requirements for a pharmacy balance and meets Handbook 44 - The Sartorius GD503 is here to fill these requirements.

Sartorius introduced the world's first pharmaceutical balance in 1871. Sartorius is a global balance manufacturer producing some of the highest quality balances in the world. Only Sartorius shatters the limits when "the Guinness Book of World Records" listed the Sartorius Model 4108 as the most accurate balance in the world.

Okay so others will tell you their balance is the best, but just the name Sartorius sells itself. Now let's look at the balance - Sartorius GD503. The balance is a Legal for Trade, NTEP Approved Class II balance and can be used for Prescription Weighing. The GD503 balance can NOT be used for pill counting.

The GD503 is not a pill counting scale nor does it connect to a scanner to reads the NDC bar code on Rx label. There were issues the FDA investigated regarding digital scales for count pills. Review this petition to the to the FDA brought James O. Maloy about pill counting scales at James Maloy also works at Fulcrum Inc and they manufacturer the Torbal Balance mechanical balance.

Retail druggists who compound prescriptions like hydrocortisone, hormone therapies or veterinary medicines need a precision weighing balance. The GD503 when set in the Legal for Trade mode offers 100 gram weighing capacity and readability to 0.0001 grams (Yes 4 decimal places!!). The verification unit (e) is to 0.001 grams. Yes, the Sartorius GD503 is 10 times more accurate than the DRX-4 by Fulcrum Inc.

For many pharmacies the GD503 is that needed trophy on the shelf gathering dust to be in compliance with their pharmacy license even though they never compound. The GD503 is one of the most accurate Legal for Trade balances on the market that can be used for compounding and the requirements for pharmacy license requiring a Class A balance. The Sartorius GD503 is one of the few balances made in America.

Capital Equipment Buyers for pharmacy chain stores of 100 or more store call us for special pricing. Target and Walmart seem to be opening new pharmacy departments and the GD503 just might be the economical solution over competitor brands. Walgreen maybe could save money using the GD503 for those locations filling less than 200 prescriptions a day verses the costly semi-automated systems that typically require installation services.

We also offer College of Pharmacy that are members of the American Association of Colleges of Pharmacy special educational discounts. We know today's pharmacy students are tomorrow's pharmacy equipment buyers and Precision Weighing Balances wants these students to experience in our opinion the very best balances - SARTORIUS.

Sartorius Pharmacy Balance GD503

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Brand Model Capacity Readability
Sartorius Pharmacy Balance GD503 100 g 0.0001 g
Add. Features
  • Carats
  • Grams
  • Legal For Trade
  • RS-232c
Comparable Scales

Sartorius Secura613-1S Milligram Balance - $3030.25

Sartorius Secura612-1S Lab Balance - $1793.50

Ohaus SJX622N/E Class III Scale - $595.00

Ohaus Class II AX2202N/E Scale - $1712.75

A&D Weighing FX-300i milligram balance - $812.00

A&D Weighing EK-120i electronic scale - $358.80

Sartorius Practum 213-1S milligram balance - $1087.80

A&D Weighing GF-200P Pharmacy Balance - $1066.00

A&D Weighing GF300P Prescription Scale - $1237.50

A&D Weighing GF-1200N Class 2 Scale - $1155.00

A&D Weighing GF-2000N Class II Balance - $1186.00

A&D Weighing GF-3000N NTEP Scale - $1327.50

Scientech ZSP400NP Pharmacy Balance - $1544.00

Sartorius Practum 224-1S lab balance - $2097.90

Ohaus Adventurer AX124/E Analytical - $2527.05

Ohaus AX224N Class I NTEP - $3367.70
MSRP: $1995.00
YOU PAY $1429.00
When you choose the Sartorius GD503 this pharmacy balance comes with a 3 door glass draftshield, dust cover to protect your balance when not in use, 100 gram Class 1 calibration mass, standard RS-232 interface and a 3 year manufacturer warranty.  The Sartorius GD503 is engineered & designed in Germany and built in the USA.

SARTORIUS GD503 NTEP certified as a prescription scale. Meets Handbook 44 requirements for a "Class A" prescription balance
Free Shipping
Capacity (Max) 100 grams
Minimum Load 0.002 grams
Scale interval d 0.0001 grams
Verification scale interval e 0.001 grams
Accuracy Class Class II balance
Legal for Trade
(NTEP approved)
YES - CofC 05-099A1 Legal for Trade in gram & carat mode ONLY
Reproducibility (std deviation)
carats (ct)
grams (g)
± 0.001 ct
± 0.0001 g
carats (ct)
gram (g)
± 0.002 ct
± 0.0002 g
Response Time (average) 3 seconds
Tare Range FULL to Capacity
Selectable Weight Units
g, ct, lb, oz, ozt, tlh, tls, tlt, Gn, dwt, mg, parts/lb, tlc, mom, K, tol, bat, and MS.  In LFT mode the the GD503 weighs in Carat & Grams ONLY
Selectable Application Programs Mass unit conversion by toggling, tare memory, net total, weighing in percent, counting, averaging.  Counting function not legal for trade
Display Update 0.1 - 0.4 seconds depended upon filter level selected
Display LCD
Allowable Ambient Operating Temperature 20° C to 35° C (68° F to 95° F)
85% RH or less
Sensitivity Drift
(10° - 30°C/50°F-86°F)
± 2 ppm / °C
External Calibration 100g INCLUDED
Pan Size ø90 mm / 3.5 in
(standard round pan)
Draft Shield Chamber Height
(from pan to top of glass door)
133 mm / 5.23 in
Dimensions (entire balance)
W x D x H
200 x 270 x 233 mm
7.9 x 10.6 x 9.2 in
Built-in RS-232 Interface YES - RS-232 interface is standard but the RS-232 cable is optional
Weighing Below Not Available.  Common applications for weighing below the balance include density determination.
AC Power Source AC Adapter 120 VAC
Power Consumption Approx. 16VA (supplied by AC adapter)
Standard Equipment 120V AC Adapter, Dust Cover, Stainless steel weighing pan, 100g external cal mass
Optional Accessories Printer, RS-232 cable, RS-232 to USB converter kit, Rechargeable external battery pack, WinWedge data transfer software
Warranty 2 years manufacturer's warranty
Net Weight, Approx. 2.8 kg / 6.2 lbs.
Sartorius lab balance Brochure Sartorius lab scale Download the brochure loaded with tons of information.
Sartorious balance User Manual lab scales Download the Instruction Manual for the GD503 loaded with tons of information.

prescription balance
The GD503 prescription scale is ergonomically designed with a sleek look and rounded corners.  Standard bi directional RS-232 interface allows communication to a pc or Sartorius printer
pharmacy balance
The GD503 comes standard with 120V AC Adapter, dust cover & Class F1 external 100 gram cal mass at no additional cost.

High resolution with stability and very fast response for operator comfort and efficiency.  On a recent visit on June 2, 2006, to a new CVS Store #0365 at 259 Main Street in Haverhill, MA 01830 they had the mechanical Torbal Model DRX-3 prescription balance.  Compounding a prescription using the Sartorius GD503 electronic balance with a 3 second of less stabilization time is typically much more productive compared to the time required to weigh on the mechanical torsion balance.  The torbal pharmacy scale designed with the two-pan equal arm balance requires preseting the desired weight and filling to a null and you have to wait for the pan to arrests.  It seems the world is a digital world and just maybe going digital with an electronic balance like the GD503 could pay for itself in labor cost savings.  If you have one of those mechanical Torbal DRX-3 prescription balances the Sartorius GD503 also offers greater accuracy.
NTEP Approved ScaleSartorius GD503 Pharmacy Balance

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

Precision Weighing Balance Special Offer Must be Selected At Time of Purchase!
Product Details
Data Printer

sartorius AGOptions
Data Printer with statistics & time-date function $400.00
5 rolls of paper $25.00
Ink ribbon cassette $35.00
WinWedge Std Software with RS-232 cable $410.00
T-Connector (fits RS-232) $279.00
Remote Display, cable length 3 ft $415.00
RS232 Cable 9 pin and 25 pin, 5 ft, IBM type $80.00
RS-232 to USB converter kit for Sartorius Balances $109.99
220V AC Adapter $40.00
AD-1683 - Static Eliminator $1095.00
YIB01-OUR Ionizing Blower neutralizes static charges $1391.00
YSTP01 Stat Pen neutralizes static electricity on samples $1420.00
Granite Platform with isolators 13 x 15 inch $569.00
Locking Device, anti-theft for GD Series $65.00
Low Cost Aftermarket Universal Specific Gravity Kit $139.95

   calibration weights mass set traceable weight weights

9 pc. Weight Set (100 g - 1 g.) Class 1 with NVLAP $986.00
21 pc. Weight Set (100 g - 1mg) Class 1 with NVLAP $1785.00
100g ASTM Class 1 (± 0.25 mg) with NVLAP Cert $145.00
100g Calibration Weight Class 2 with NVLAP (± 0.50 mg) $130.00
100 g ASTM Class 6 (± 10 mg) cal mass $10.00 - no Cal Cert.
Cal-Paks 100g, 10g, and 200mg Class 1 with NVLAP $304.00
Cal-Paks 100g, 10g, 2g Class 1 with NVLAP $319.00
Prescription balance   certified prescription scales
Image taken from the rear of the
GD-503.  Features RS-232 interface.
  Polished stainless steel weighing pan, ring and floor makes cleaning simple.
pharmacy oompounding balance   Class A prescription balance
Innovative high-grade draft shield with low profile design resulting in less bench space compared to conventional analytical balances (height from pan to top of glass door is only 5.23 inch).  Draft shield offers 3 sliding doors that slide open quietly and effortlessly.   Leveling the balance with the 2 front adjustable feet is a breeze.  The identification badge is located on the left side of the GD503 Class II NTEP Approved Balance in accordance to National Conference on Weights and Measures.
carat balance   Certified gram lab balance
Balance set in LFT mode in carats.  Notice the last digit is "boxed"   Balance set in LFT mode in grams.  Notice the last digit is "boxed"
Handbook 44 scale   weighing device
Bottom side of GD503 balance shows the two front adjustable feet and tamper evident sticker across access plate and the balance housing.   When the balance is used in legal metrology (a.k.a NTEP mode) external calibration is blocked by a seal over the access plate.
calibration sealIn accordance with weights and measures regulation the balance must be sealed to prevent tampering and re-calibration once the balance is placed in service.  To prevent access to the calibration switch a tamper evident seal is placed across the access plate and bottom housing.

The Weights and Measures Inspector will place this seal on the balance once the inspector has tested the balance and places the balance in service as a legal for trade device.
Handbook 44 requires the identification badge specify the model number, serial number, "d" - display division, "e" - verification scale interval and the National Type Evaluation Program Certificate of Conformance (NTEP CC)
sartorius quality balances   sartorius lab equipment
Spectacular packing insures your analytical balance is delivered without damage.   Styrofoam packing surrounds your Sartorius Analytical Balance lessen the chances of any damage due to rough handling by the shipping carrier.  Like we always say - to the shipper like UPS, fragile means football and the Sartorius is designed to handle the delivery.
legal for trade mode
Easy-to-clean display that is highly resistant to chemicals.  High contrast LCD (height of digits: 13 mm / 0.5")

Keys with positive click action for reliable and confident activation of specific functions.  Keypad holds its shape even after repeated use.  Toggles between two selected weigh units at the touch of a key

Easy-access, all-glass weighing chamber and easy-to-remove and easy-to-clean high-grade stainless steel weighing pan.  Weighing chamber base plate is easy to clean because all parts can be simply removed

sartorius scale GD603 balance using usb interface to computer
Shown above is the Sartorius GD503 Pharmacy Scale interfaced with a laptop.
"We did not invent the product, but we made it better" is a famous quote from BASF and we feel the same with our new RS-232 to USB converter kit for Sartorius Balances exclusively found at Precision Weighing Balances.  Your Authorized Sartorius Dealer and known throughout the world for deep discount prices.

Our USB to Serial Adapter kit for Sartorius Balances (our part # SARUSB) offers you the best of both world.  If you want to interface the Sartorius Scale with a RS-232 serial port you simply disconnect the 1 foot RS-232 to USB cable.scale usb cable

Eliminate IRQ conflicts by going USB.  Connect your Sartorius balance to any PC running the Windows OS using HyperTerminal or purchase a third party software wedge.  We offer step by step instructions how to use HyperTerminal here.

This kit's only $109.99 and it's custom made for

Sartorius GD503 versus Torbal (Fulcrum) digital pharmacy balance
Model Sartorius GD503 Fulcrum DRX-4
Capacity (max) 100 grams 100 grams
Minimum Load 0.002 grams 0.02 grams
Reading Unit 0.0001 grams 0.001 grams
Verification Unit 0.001 gram 0.01 gram
Tare range 100 grams 100 grams
Accuracy Class II II
Temperature Range 68° - 95° F 59° - 86° F
Weighing Time 3 second 3 second
Pan Size 3.5" round 4.57" round
Breeze Break Standard YES NO
3 Door Draftshield YES NO
Warranty 3 Years 1 Year
Made In USA Poland
The information above is subject to change and people should always call the manufacturer directly to confirm the specification have not changed.  The specs for the Fulcrum DRX-4 where those published on the Fulcrum web site as of May 2006.  If you find any discrepancies with the above data please call Precision Weighing Balances at 978-521-7095 and we will make any required changes.
Caveat Emptor - Balance requirements vary from state to state.  The requirements are dictated with each state's pharmacy law and regulations.  Determining the requirements involves perusing each state's pharmacy law and regulations to determine the requirements.  Precision Weighing Balances suggests contacting the agency that authorizes your pharmacy license for approval of this balance prior to making the purchase.  Although this balances is approved on a national level as a pharmacy balance, state and local agency may supersede with their own regulations.  It is the purchaser's responsible to verify using the above balance is in compliance with your pharmacy license requirements.

sartorius analytical balance
Copyright © 1995-2013 Precision Weighing Balances, All Rights Reserved.  This site is owned and operated by Precision Weighing Balances who is an Authorized Sartorius Dealer.  This site is not sponsored or affiliated with Torbal Balances or Fulcrum Balances.

Handbook 44 for 2006 <>, in section 2.20 UR.3.1 Use Requirements Table 8 on page 2-39 states for class II scales with scale divisions from .001g to .05g inclusive the recommended minimum load is 20d


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