The Sartorius GD503 has been discontinued and no longer in production as of May 2013. The Sartorius jewelry line was phased-out and at this time there is no direct replacement. We have no remaining stock on the GD503 and all information displayed herein is for archival and support purposes only. For benchrest shooters looking for our reccommendation for an alternative balance to weigh bullets, reloads and brass case we ask you to look at the Sartorius Entris64-1S.
Looking for a balance that offers 100 gram weighing capacity and reads to 0.0001 grams or 500 carats x 0.001 carats the Sartorius GD503 is awesome. Totally unbelievable value. 500 carat balance readable to 0.001 carats that is Legal for Trade or if you want to weigh in grams 100 grams with readability to 0.0001 grams - YES 4 decimal places in grams. Sartorious GD503 comes with the 100 gram external calibration weight and dust cover at no additional cost.
GD503 balance comes with a 100 gram ASTM class 1 calibration weight, dust cover and RS-232 interface for connection to a computer or optional Sartorius YDP20-OCE printer. Only the Sartorius GD-503 comes standard with these items while competitive models typical charge big money for the calibration weight and a dust cover. Plus the GD503 has a 2 year manufacturer warranty. We dare you to compare and when someone tells you they can offer a similar balance for less give us a call and we'll help you understand what they are trying to sell you. It won't be made in the USA, it won't come with the calibration mass nor dust cover and it won't perform like the GD503 for the price we are selling the GD503.
Sartorius GD-503 is Legal for Trade. Customers told us they needed a high precision jewelry scale they could sell diamonds, precious and semi precious stones at trade shows like the Tucson JCK Gem Show. Some states like Arizona, New York, Florida don't play any games when it comes to weighing - you either have a Certified Class 2 balance to sell gems by weight or you're not selling any gems by weight until you get a Legal for Trade Scale.
When you're buying precious gems and minerals by the gram or carat they must be measured on an ntep scales. Investigators from the Arizona Department of Weights and Measures spend several days every year at the Tucson Gem and Mineral Show, where they checked scales used by dealers who were selling items by weight. At the 2006 Tucson Gem and Mineral Show they confiscated 145 scales that were being used illegally because they did not conform to NTEP standards. Arizona Weights and Measures doesn't fool around and they can impose Civil penalties under section 41-2115 up to $50,000 in some situations. Recently in Albany, New York inspectors from the county's Division of Weights and Measures raided a store for using the wrong scales and the owner faces fines up to $70,000.
At gem & lapidary trade shows you'll probably not be able to sell your gems unless they have a Legal for Trade type approved balance like the GD-503 that can meets the inspector's requirements. The GD503 weighs up to 500 carats weighing capacity with readability to 0.001 carats. In the Legal for Trade mode the GD503 offers a second weigh mode in grams - 100g x 0.0001g. Yes, that is correct the balance increments in in four decimal increment in the gram weigh mode.
A big selling point on the GD-503 in the low profile 5.23 inch high draft shield chamber (height from pan to top of glass door). The two side doors and top door slide open for fast & easy access to the weighing chamber. Jeweler's have limited space in their stores and the small footprint makes the Sartorius GD503 a big selling point.
We believe the GD503 is the best 3 decimal place carat scale on the market for price, performance, features and quality. Those needing to weigh 0.0001 grams we doubt you can find anything comparable. Made in the USA and engineered & designed by the best metrology engineers that Göttingen Germany has at Sartorius' advance weighing technology research lab.
Please scroll down on this we page and there are a ton of information and images to help you decide the Sartorius GD503 is the weigh to go.
Sartorius GD503 is ergonomically designed with a sleek look and rounded corners.
Standard bi directional RS-232 interface allows communication to a pc
Gun and ammo reloaders really need to watch the video above that one of our customers put online. See the Sartorius GD503 in action and where professional shooters all over the world are learning to forget those low cost strain gauge scales that don’t work (see this video to see the difference). Watch the reloading of bullets using the Sartorius GD503, Omega Powder Trickler and the RCBS Chargemaster. A kernel of Hogdgon H4350 powder weighs between 0.025 – 0.030 grains and the Sartorius GD503 increments in 0.005gn. If you are tired of all the headaches using digital scales in the past it is time for you to buy a real balance that can weigh correctly. Give us a call at 978-521-7095 and we will configure the GD503 so the balance works out of the box in grains. If you are buying a digital balance for reloading we really think you should buy the Sartorius GD503.
Sartorius Entris64-1S with the Omega 2-Speed Electric Powder Trickler can deliver the results the competitive benchrest needs to reload ammo to the kernel of powder. We use Hogdgon H4350 powder and show how the powder weighs between 0.020 -- 0.030 grains and how easy you can weigh accurate charges to the kernel.
To weigh to the kernel of powder you need an analytical balance the weighs to 0.0001 grams. When the Sartorius Entris64-1S weigh mode is configured to grains the balance increments in 0.002 grain divisions. You will not be able to know every bullet is weighed to the kernel of powder with a milligram balance (0.001g) since most milligram balances increment in only 0.02 grains (See this video for proof).
In the video above we show ammunition reloaders wanting to weigh powder to a kernel they need to purchase an analytical balance that increments in 0.002 grain divisions/graduations. That is two thousandth of a grain.
Now just because a balance offers readability to 0.002 grain divisions/graduations does not mean it is accurate to ±0.002 grain. Readability is just what the balance's displays resolution. One needs to dig into the manufacturer's specification and look for the word "linearity" which is the accuracy of the balance. Depending on the manufacturer the linearity is ± 2d, 3d or some low cost Chinese made balances it could be 4d or 5d. Using the Sartorius Entris64-1S the linearity is stated as ± 2 divisions. The Entris64-1S increments in 0.002 grain divisions so the linearity is ± 0.004 grains. These manufacturer specs are performed by the manufacturer and done in controlled environments (temperature & humidity controlled, no static electricity issues, no radio frequency interference, perfectly stable air so there are no drafts). You have to have faith the manufacturer is honest in their testing and we have seen over and over again the no name brands stated specs do not correspond to the performance of the balance. Since testing is done in ideal environments you really can't expect the same performance and let's just say if the manufacturer states ±2d with your environment you'll get ±4d.
A kernel of Hodgon H4350 weighs between 0.020 - 0.030 grains per kernel. Each kernel weight varies. So for the Sartorius Entris64-1S I like to say when you have your balance level, balance warmed up for at least 30 minutes, in a stable environment realistically you'll expect to have accuracy to 0.008 grains (0.002gn x 4d = ±0.008gn). Now if you purchased a milligram balance the readability and linearity would be 10 times less of an analytical balance so the best performance you could expect is 0.08 grains. If a kernel weighs between 0.020 - 0.030 grains per kernel there is no way a milligram balance can deliver the consistent weighing results the competition benchrest shooting is looking for which is knowing each round of ammunition has the same amount of powder. Having ammo with an extra kernel or short a kernel will result in the bullet being high or low of the target's bullseye.
The RCBS10-10 mechanical beam scale finest graduation is 0.1 grains. The large poise increments in 10 grain divisions, the cylindrical micrometer poise has graduation to 0.1 grains and uses a gauge that increments in 1 grain divisions. One 360 degree rotation of the micrometer poise yield 1 grain.
If we say the average weight of a kernel of H4350 is 0.025 grains then 4 kernels weigh 0.1 grains, which is the best readability the RCBS 10-10 offers. It is not the accuracy since you are moving parts, friction points and the agate bearing the fulcrum pivots on wears. We'll use the Omega 2 Speed Powder Trickler from Daddy Products available at www.omegapowdertrickler.com and we will dispense one kernel at a time to see how many kernels it takes to move the beam of the 10-10. Now watch closely as I drop one kernel while also looking at the beam pointer. I am going to press the BLACK button on the Omega Trickler and drop 1, 2, 3, 4 5 kernels. You'll notice it takes 4 to 5 kernels to see the beam even move. If you are doing any competition shooting and weighing powder with the 10-10 and other shooters are using an analytical balance you can see you are at a great disadvantage.
Now we will show you how to achieve weighing powder so you know each round is weighed to the kernel.
For many years those competition shooters wanting to weigh powder to the kernel purchased the Sartorius GD503. Once the GD503 were sold out Precision Weighing balances alternative to the GD503 was the AND HR100a and finally in May of 2014 Sartorius re-entered the market with an affordable analytical balance called the Entris Series. The Entris64-1S weighs up to 926 grains & increments in 0.002 grain divisions.
We show in the video above how the Entris64-1S can weigh to the kernel using the Omega 2 Speed Powder Trickler from Dandy Products available at www.omegapowdertrickler.com
If you own one of those RCBS or Ohaus 10-10 mechanical beam scales they only weighed to 0.1 grains so they weren't really that accurate for ammo relaoders that wants to reload bullets with the same amount of powder. These mechanical scales are almost from the dinosaur ages.
The video above shows the Sartorius Entris313-1S milligram balance that weighs to 0.02 grains (5x greater readability than the 10-10, 02gn x 5 = 0.1gn). The Entris313-1S is a big step up from other mechanical beam scales and it isn't a strain gauge scales like the Acculab VIC123, Sartorius AY123, Denver MXX123, but as this video shows if you want to weigh to 1 kernel of powder you need greater accuracy than a milligram. Since a kernel of powder weighs between 0.020 - 0.030 grains you'll need an analytical balance like the Sartorius Entris64-1S or AND HR100a.
In the video above we use the Omega 2-Speed Powder Trickler to dispense one kernel of powder at a time. If you are a competitive benchrest that needs to reload ammo to the kernel of powder then watch this video and buy an analytical balance.
resolution with stability and very fast response for operator comfort
and efficiency. The GD503 comes standard with 120V AC Adapter, dust cover
& Class F1 external 100 gram cal mass at no additional
GD503 Legal for Trade Balance
(select any of the options below and then the
"BUY HERE" image)
Special Offer Must be
Selected At Time of Purchase!
from the rear of the
GD-503. Features RS-232 interface.
stainless steel weighing pan, ring and floor makes cleaning simple.
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.
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.
set in LFT mode in carats. Notice the last digit is "boxed"
set in LFT mode in grams. Notice the last digit is "boxed"
side of GD503 balance shows the two front adjustable feet and tamper evident
sticker across access plate and the balance housing.
balance is used in legal metrology (a.k.a NTEP mode) external calibration
is blocked by a seal over the access plate.
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
is set to non-NTEP mode since the least significant digit is
is set to NTEP mode since the least significant digit is
packing insures your analytical balance is delivered without damage.
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.
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
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
Shown above is the Sartorius GD503 Precision
Diamond Scale interfaced with a laptop.
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.
Eliminate IRQ conflicts by going USB. Connect your Sartorius balance
to any PC running the Windows OS using HyperTerminal or purchase a third
wedge. We offer step by step instructions how to use HyperTerminal