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Sartorius GC2502 Milligram/Carat Balance
All the features & more of the Sartorius CP Series Milligram Balances at a fraction of the cost.

The GC2502 high precision carat balance with 3 door removable glass draft shield, RS-232 interface and the new innovative triangular weighing pan shape.  Calibration is achieved with the 200 gram Class 1 calibration mass that is included with each GC2502.  If you purchased a CP-Series the 200 gram cal mass is an $134 option, but the cal mass comes with the GC2502 at no extra cost.  In addition you receive a 3 door glass draft shield with the GC2502 while the CP Milligram Series has the triangular draft shield with a hinged top lid.  The GC2502 is a much nicer and usable draft shield in our opinion.

New design, developed for professional use in a wide range of jewelry and precision weighing applications.  Equipped with the very latest in weighing technology, The Double Lever System Weigh Cell - characterized by fast response times, excellent repeatability and exceptional mechanical ruggedness.

The Sartorius GC2502 features a 0-2500 ct x 0.005ct for weighing precious gem stones.  The GC2502 offers 16 weighing function so it's perfect for measuring in grams with the specs 0-500 g x 1 mg to meet just about any weighing application

  Engineered in Germany, assembled in Arvada, Colorado and backed by a 2 year manufacturer warranty by Sartorius North America located in Edgewood, New York.
Sartorius is a German company and maker of some of the world's finest balances since 1871 when they introduced the world's first pharmaceutical balance.  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.  Sartorius has been proving their trustworthiness thanks to their top-of-the-line technology that ensures maximum accuracy.  Sartorius products are manufactured with ISO9001 standards and have the CE mark.  Sartorius' excellent reputation and image in the technologically sophisticated field of weighing balances make them a global leader.  Sartorius' endeavors to expand its traditionally outstanding position on the market for laboratory weighing balances now targets the jewelry and geologist marketplace.

The GC2502 is the ultimate milligram balances for the lapidary marketplace.  The GC2502 has very similar features to the Sartorius CPA423S but sold for hundreds less.  Basically, the gem market place is extremely price sensitive market sector verses the laboratory marketplace so Sartorius developed the GC2502 with a special price to meet the pricing requirements for the jewelry marketplace.  Whether you're weighing diamonds or chemical compounds the GC2502 weighs from 0 to 2500 carats (0-500 grams) weighing capacity in 0.005 carats (1mg) intervals. 

One feature that we really like is low profile 3 door draft shield that eliminates air currents from interfering with the weighing platform typical found only on analytical balances like the Sartorius CP Analytical Balances.  The height from pan to top of glass door is only 6.37 inch high with the GC2502 saving you lots of bench space.

Sartorius Double Lever SystemThe GC2502 produces steady readings using the high stability mode and the unique Sartorius weighing system even if the environmental conditions are not ideal for precision weighing.  The Double Lever System, or DLS, for short based on its special force transmission design.  With this patented system, Sartorius sets the technological standards ­ for the new millennium.  Patented, this new "small" system is cut from a single block of a special, highly rugged aluminum alloy using high-speed 21st century milling technology.  The double lever principle offers two decisive advantages: the design in the area of the pan linkage is highly resistant to mechanical stress and therefore has exceptionally high mechanical stability, and the system is about half the size of the monolithic block cell, allowing for a smaller footprint.  Like the monolithic weigh cell, it is cut from a single block of aluminum and no screw fasteners are needed between functional parts.  This keeps the system less sensitive to fluctuations in temperature, and with fewer parts there is less chance of failure.

The Monolithic DLS system offers unbeatable advantages for daily use like Incredibly fast response time and Unfailing reliability and near-zero susceptibility to interference.  The reasons for these considerable advantages are two fold: the number of individual parts has been reduced by more than 70% and the mechanical construction has been designed to last for years of trouble-free operations.
SARTORIUS GC 2502 MILLIGRAM BALANCE (with external cal)

The GC2502 is Discontinued Replaced by GCA2502

Capacity x Readability (carats)

0 - 2500 x 0.005 ct

Capacity(g) x Readability (mg)

0 - 500 g x 1 mg

Reproducibility (std dev)
carats (ct)
milligrams (mg)

± 0.01 ct
± 2 mg

carats (ct)
milligrams (mg)

± 0.01 ct
± 2 mg

Response Time (average)

2 seconds

Tare Range FULL to Capacity
Selectable Weight Units g, kg, ct, lb, oz, ozt, tlh, tls, tlt, Gn, dwt, mg, /lb, tlc, mom, K, tol, bat, and MS.
Selectable Application Programs Mass unit conversion by toggling, tare memory, net total, weighing in percent, counting, averaging
Display Update

0.1 - 0.4 seconds depended upon filter level selected


LCD with backlit

Allowable Ambient Operating Temperature 5 C to 40 C (41 F to 104 F)
85% RH or less
Sensitivity Drift
(10° - 30°C/50°F-86°F)

± 1 ppm / °C

Motorized Internal Calibration

NO - external calibration only

External Calibration

200g INCLUDED with GC2502

Pan Size

ø110 mm / 4.3 in
(inner diameter)*

Draft Shield Chamber Height
(from pan to top of glass door)

162 mm / 6.37 in

Dimensions (entire balance)
W x D x H

213 x 342 x 270 mm
8.4 x 13.5 x 10.6 in

Built-in RS-232 Interface


Weighing Below A port for a hanger for weighing below the balance is available.  You can attach a sample using a suspension wire, for example.  Common applications for weighing below the balance includes density determination.  Sartorius recommends to complete the balance with the density kit YDK01 and modify the balance with a higher weighing chamber for more space in handling the sample.
AC Power Source

AC Adapter 120 VAC

Power Consumption

Approx. 16VA (supplied by AC adapter)

Standard Equipment

120V AC Adapter, RS-232 interface, Stainless steel weighing pan, 200 gram external calibration mass

Optional Accessories

Printer, RS-232 cable, Carrying case, Rechargeable external battery pack, SartoConnect data transfer software


2 years manufacturer's warranty

Net Weight, Approx.

5.2 kg / 11.5 lbs.

Click image to learn more about features

GMP/GLP Printout - Click for more info   LCD Backlit - Click for more info   External Calibration - Click for more info   RS232 Standard - Click for more info   Below Balance Weighing - Click for more info

Download the Instruction Manual for the GC2502 download manual.  The instruction manual contains detail information regarding calibration, additional features and keypad functions.

sartorius jewelry balancebalance weighing platform
* GC2502 Triangular weighing pan shape:
ø = Diameter of the inner circle. Triangular weighing pan shape the shaded area is completely available for use in addition

Sartorius milligram precision balance
[Click for Hi-Res Image]
Milligram balance made affordable for just about anyone.  The removable glass draft shield is an engineering marvel.  Sartorius GC2502 comes standard with 120V AC Adapter, gem pan, & 200 gram calibration mass.  The GC2502 features a external calibration and is achieved by a a simple press of the button from the keypad and placing the 200 gram weight on the weighing platform.

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 quality balances   Sartorius balance weighing chamber
Side view shown weighing chemicals with a 3 5/16 x 3 15/16 medium polystyrene weigh boat.  The triangular weighing pan and wide draft shield allows you plenty of room.  The 2 front adjustable feet make leveling the balance a cinch.   All-glass draft shield has smooth-action doors that open extremely wide.  The large weighing chamber enables fast and reliable positioning of any type of sample.  All parts of the weighing chamber base can be removed, to facilitate quick and easy cleaning.
sartorius 131 heartland edgewood ny   sartorius lab balance
The GC2502 offers a larger 4.3 inch diameter weighing platform, while the GC803S and GC1603P is only 3.1 inch.   Catches the eye at first glance is the distinctive display.  Backlit in blue, with high contrast and exceptionally large numbers (16.5 mm), it is easy to read under any lighting conditions.  The intensity of the backlighting can be adapted to individual preferences.
sartorius quality balances   sartorius weighing balances
The GC2502 is designed to be used with the glass draft shield, but sometimes it's hard to get large items in the weighing chamber.  A good example would be weighing 8" silicon wafers.   Image taken from the rear of the GC2502 shows standard RS-232 interface and view of draft shield.  Lock-down bracket to secure your precious Sartorius balance.

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