Precision Weighing Balances
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Type Approved EK600i Legal for Trade, NTEP Approved, Class III digital scale. The EK-600i a maximum of 600 grams weighing capacity and increments in 0.1 gram intervals while providing outstanding performance, professional features with the Quality You Demand.

Rigid construction with overload stops protection prevents damage to the weighing sensor for long standing durability and is backed with a 5 year limited manufacturer warranty. Simple 5 key operation allows you to turn on or off the scale, zero/tare the scale, switch weigh units, send weighing results to the optional AD-8121B printer and configure the balance. The color coded tactile-feel keys have clearly defined keys simplifies weighing operations.

What is the scale's TRUE readability in Legal for Trade mode? The EK-600i is 600g x 0.1g. Caveat Emptor many jewelry scales on the market might read to 0.1 gram, but are LFT only to 1 gram. A few examples include the Ohaus AX8201N/E, Mettler Toledo JS8001G/A Silver , Mettler JL6001-GE.

Other precious metal scales might read to 0.01g, but they are only LFT to 0.1g and offer very little weighing capacity. If the Weights & Measures Inspector know their job you should expect to weigh down to only what your scale has been approved for weighing. If you look at a CofC the inspector will only allow you to weigh to the the tolerances based on "e" not "d". The EK-600i offers 600 grams weighing capacity and the scale is LFT over the entire weighing range by 0.1 grams.

The EK-600i Compact Scale comes standard with RS-232C interface at no additional cost & Legal for Trade. Plus you can download a free copy of the A&D WinCt balance communication software. If you're shopping for a new compact scale, you'll find everything you need with the EKi Series from A&D Weighing. Light and portable the EKi Series is most suited for educational, R&D, pharmaceutical, and industrial applications.

When you're shopping for a legal for trade (LFT) scale compare the value the EK-600i offers over the competition.

How long is their factory warranty? The EK-600i is 5 years!!! Ohaus warranties their scales for only 2 years while Mettler Toledo gem scales are only 1 year.

Another factor to consider is how does one locked out the scale and put it into service as a Legal for Trade Scale. The A&D design is very simple and easy. A&D designed the scale with a removable door on the back of the scale that the Weights & Measures Inspector simply puts a wire through and crimps.

If you are selling or buying goods by weight you need a LFT scale in most states. Capital Cash For Gold got a visit from Albany, New York Division of Weights and Measures and cited the gold buyer for using the wrong electronic scales and the owner faces fines up to $70,000. You can get in for using the wrong digital scale to buy precious metals. You can read more about what is legal for trade scales here.

A&D has built an amazing high quality strain gauge electronic scales that performs lightening fast. Unlike other manufacturer's that outsource their scale to the lowest cost manufacturer in China the EK600i is made in AND Weighing company owned and operated factory in Korea.

Haven't heard of A&D Weighing? They are the third largest manufacturer of laboratory balances and scales in the world. Corporate headquarters are based in Japan but US offices in California and Georgia. All EK-i electronic scales are backed with a 5 years manufacturer warranty making it the longest manufacturer warranty in the industry for a high quality lab balance.

Another selling point is AND Weighing fabulous product support. A&D Weighing has a dedicated product support line by calling 1-800-726-4940 6:00 am to 5:00 pm PST. Finally the A&D is simply to use and configure. The product manual is written for the average person to configure their scale verses having to spend $100's calling for scale company help you figure out how to use the weighing device.

Precision Weighing Balances has been an Authorized AND Weighing Distributor for over a decade. See the full line of EK-i balances at the bottom of this web page or click here.

If require a scale to weigh medical marijuana most states require you to weigh on a scale that is legal for trade to 0.01 grams (EK600i is NOT accurate enough). Some states like Colorado as of March 2016 accept "d" (value of scale division) to 0.01 grams and "e" (value of verification scale division) is 0.1 grams (Example A&D EK-610J, Mettler Toledo JL602-GE or Ohaus AX622N/E). Other states like Oregon and even Minnesota for weighing precious metals require "e" to 0.01 grams and this means you'll need to buy a weighing device were "d" equals 0.001g (Example A&D FX300iN , AND GF-200P or Ohaus AX423N/E). Always check with your particular requirements since State, County and City regulations have changed and enforcement is getting stricter. Just because a store down the street is using a particular model scale does not mean if you buy the same model they will allow you to use the scale since that store might fall under a grandfather clause under the old law.

EK-600i Legal for Trade Digital Scale is a great scale, but the EK1200i is an even better buy if you want double the weighing capacity HERE.

A&D EK-600i Class III digital scale

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Brand Model Capacity Readability
A&D EK-600i Class III digital scale 600 g 0.1 g
Add. Features
  • Carats
  • Grains
  • Milligrams
  • Pounds
  • Ounces
  • Pennyweight
  • Grams
  • Troy Ounces
  • KiloGrams
  • Legal For Trade
  • Parts Counting
  • RS-232c
  • NTEP Class III
Comparable Scales

Ohaus AX622N/E Legal for Trade Scale - $1071.00

Ohaus Scale Class II AX8201N/E - $1338.75

A&D EK610-J NTEP Class II Scale - $259.77

Ohaus SJX622N/E Class III Scale - $346.50

Mettler Toledo JL6001-GE Class II Approved Scale - $543.00

Ohaus Scout SPX621 Digital Scale - $244.30

Ohaus Class II AX2202N/E Scale - $1606.50

My Weigh i-1200 digital scale - $86.50

A&D EK-1200i NTEP jewelry buyer scale - $290.00

A&D EK-6000i LFT Class III Scale - $409.23

A&D EW-1500i legal for trade scale - $331.50

A&D EK6100J NTEP Class II Scale - $254.97

Ohaus AX1502N/E Class II Balance - $1338.75

Mettler Toledo JL602-GE Class II NTEP Scale - $543.00

Ohaus SJX1502N/E NTEP Class II - $364.00

Mettler Toledo JS3002G/A LFT Scale - $1280.00

Mettler Toledo JS4002G/A Class II balance - $1392.00

A&D FX300iN NTEP approved class 2 scale - $813.75

A&D FX1200iN NTEP type approved scale - $761.25

A&D FX2000iN NTEP medical marijuana dispensary - $791.25
MSRP: $520.00
YOU PAY $334.00
A&D Digital Compact Balances
AND Weighing Scale
  • Easy to read at any angle large (16mm in height) backlit display

  • 9 built-in weighing units plus counting & percent mode

  • Multiple weighing units and ACAI counting function

  • Triple weighing range for EW-i series

  • Fully digital calibration

  • Highly portable
Legal For TradeFor years the EK/EW series have been top selling products.  Now the new EK-i Compact Balances have been designed to carry on their tradition with enhanced capacities and resolutions, and EW-i series comes with attractive triple ranges of weight.  New electronics, wider selection of capacities & resolutions, and remote-zeroing have been included in a low profile rugged housing & RS-232C as standard equipment. Electronic Weighing Scales

All EKi-Series incorporate "ACAI" Automatic Counting Accuracy Improvement.  This exclusive A&D software feature enhances your counting ability.

ACAI works automatically when using the counting function.  ACAI redefines the unit weight as you count providing you stay within the ACAI range of 10 to 20 counts.  When the ACAI is activated the "ACAI" font segments on the LCD will blink.  To understand the parts counting mode and ACAI better click here.

Your Cost $334.00
A&D Weighing just had a price increase on the EK Series. Just before the price increase we made a large purchase for EK-610J (600g x 0.01g) and you can buy the EK-610J for $259.77 while supplies last.
S&H via UPS Ground $15.00

600 x 0.1 g

Decimal Ounce

21.165 x 0.005 oz

Decimal Pound

1.3230 x 0.0005 lb

Troy Ounce

19.290 x 0.005 ozt


385.8 x 0.1 dwt


3000 x 0.5 ct

Grain Unit

9260 x 2 gn

Counting Min unit weight

0.1 g

Max. Count

6,000 pcs

# of samples

5. 10, 25, 50 or 100 piece

Percentage Min. Div



± 0.1 g

Repeat./Std. Div.

0.1 g

Legal for Trade

YES -  CofC 04-019A1
Only the EK-610J, EK-6100J, EW-1500i, EW-12Ki, EK-600i, EK1200i, EK6000i and the EK-12Ki are Legal For Trade.

Verification scale division (e)

gram (0.1g), ounce (0.005 OZ), ounce troy (0.005 ozt), pound (0.0005 lb), pennyweight (0.1 dwt), carat (0.5 ct), and grain (2 GN)

Displayed scale division (d)

gram (0.1g), ounce (0.005 OZ), ounce troy (0.005 ozt), pound (0.0005 lb), pennyweight (0.1 dwt), carat (0.5 ct), and grain (2 GN)

Pan Size

133 x 170 mm / 5.2 x 6.7 inches

Tare Range To capacity by subtraction
Stabilization Time 2 Seconds (typically)
Sensitivity Drift ± 20 ppm / °C (10°C~ 30°C / 50°F ~ 86°F)
Display 7 segment LCD display with backlit
(Character height 16 mm)
Display Refresh 10 times per second
Physical Dimensions 7.5 (W) x 8.6 (D) x 2.6 (H) inches
Operating Temperature -10°C ~ 40°C
14°F~ 104°F RH less than 85%

AC Adapter, 100, 120, 220, 240 VAC 50/60Hz
9 hours continuous operation (backlit off) with rechargeable battery pack (optional)

Standard Accessories Manual, AC Adapter, RS-232C interface
Optional Accessories Comparator/Relay Output, Rechargeable NiMH Battery pack, Calibration mass, Carrying Case, Printer

Weight (Approx.)

1.3 kg / 2.9 lb

Cal. Mass (optional)

500 g

electronic scalesBrochure digital gram scales Click Here To Download For More Info
Digital ScaleData Brief Digital Gram Scale Download For Additional Specifications
Download the Instruction Manual for the EK- Series (1.01 MB) now Electronic Gram Scales  The instruction manual contains detail information regarding calibration, additional features, information regarding optional RS-232C, Current Loop, Comparator/Relay Output and keypad functions.

Weighing equipment - The world runs on weights & measures. Almost everything you see & touch is weighed.

In this video we offer an overview of the A&D Weighing EK6100J and EK610J. The EK610J (600g x 0.01g) has the same display, same housing and operates very similar to the EK600i so we recommend you watch the video to gain more insight on the scale. There are some slight differences mainly the EK600i only reads to 0.1 gram while the EK610J increments in 0.01 gram increments.

Another difference is weighing platform size for the EK600i is rectangular measuring 5.2 x 6.7 inches, while the EK610J is a round 4.3 inch diameter platform. Both scales are Legal for Trade, NTEP Approved 6000d Class II Scales.

For the EK610J "d"(value of scale division) is 0.01 grams and the "e" (value of verification scale division) is 0.1 grams, while the EK600i "d" and "e" are both 0.1 grams. The EK-610J DOES NOT have a functional RS-232 serial interface so you can not connect the EK-610J scale to a computer or A&D printer, but you could with the EK-600i.

If you have no plans to connect the EK600i to a computer for data acquisition or the A&D 8121B printer the EK610J is a better buy for most people since you get greater accuracy than the EK-600i.
The EK600-i comes standard with an 120V AC Adapter. So you'll need to plug the scale into a power receptacle. What happens if you need to operate the scale and there is no electrical outlet available?

Well there is an answer to your dilemma, but it requires you to purchase the optional EKW-09i rechargeable battery pack. When fully charged you'll have approximately 9 hours of scale operating time. Watch the video above to see how to install the optional EKW-09i rechargeable battery pack. Installation is the same for the EK-600i.
Now you can add a layer of protection against accidental spills when mixing inks, dyes or other weighing application when a person's fingers might not always be clean. The optional protective cover (part number is AX:3005824-5S available in the optional accessories section) is chemically-resistant.

This form fitted clear transparent plastic cover in-use cover is easy to install on the EK-600i and other EK/EW models with the 5.2 x 6.7 inches rectangular platform requires you to remove the weighing pan support to install the clear plastic cover and this video shows how this is done.
The optional EJ-12 hard shell transport case features die cut foam specifically designed for holding AND Weighing EK-600i digital scale. This carrying scale is convenient for transporting the digital scale or just storing your scale when not in use to lessen the chance of damage to the precision measurement weigh sensor. Whether the scale is turned On or Off if one applies an excessive load or shocks the platform you can permanently damage any scale. The optional EJ-12 case is a low cost scale insurance policy to protect your scale.
Portion Control
Simply to use keypad with tactile push buttons
Don't get caught off guard by weights and measurement because you don't have a Legal-For-Trade balance for your jewelry, tobacco, coffee or candy store resulting in a cease and decease order.  Stay in business and become compliant for your state/county weighing requirements with a Legal-For-Trade balance.  The EK-610J, EK-6100J, EK-600i, EK1200i, EK6000i, EK12Ki, EW-1500i & EW-12Ki are Legal-For-Trade and found to comply with the applicable technical requirements of Handbook 44, "Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices."  You can review the actual CofC 06-054 and Certificate Number 04-019A1 here.
Electronic Weighing ScalesKeypad calibration, parts counting, percent weighing, HI/OK/LO comparator, remote zeroing, full-scale tare, large 5/8" high LCD and stability indicator.

Full display segment check after pressing "ON" button to power up scale. All display segments checked for correct operation to ensure operator is aware of any potential data recording errors.

Weighing units are clearly indicated on the display to ensure correct unit of measurement is recorded.  In addition, user can select the weighing mode(s) needed, and lock out those weighing modes you desire "not to be use."  Other low cost portable toploading scales offer a small little arrow pointing to the weighing mode which is silk-screened on the display face plate.  The A&D EKi-Series displays ounces as "oz", pounds as "lb", etc clearly on the large bright LCD display.  Avoid operator errors in recording data & ensure the correct unit of measure when multiple weighing modes are enabled with the EKi-Series.

Purchasing a Legal for Trade NTEP Approved digital scale can be confusing with so many different models on the market. Just visit and you'll see we offer over 200 different Legal For Trade Scales. Watch the YouTube video above as we compare the A&D Weighing EK1200i, Ohaus Scout SJX1502N/E and Citizen CZ1200. These 3 models are Class II weighing devices with a verification scale division (e) equal to 0.1 grams.
A&D EKi Series Compact Balances
Download the User Manual (2.0 MB)

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


Comparator Output Interface $160.00
AD-8920 - Universal Remote Display $250.00
AD-8121B Multi-Function Printer $850.00
Rechargeable Battery $209.00
Carrying Case $65.00
Protective In-Use Cover (each) $15.00
Anti-Theft Lock $73.00

TB:164 - 220V AC $55.00
USB to 9 pin RS-232 Converter for EK Series $53.00
RS-232 to pc cable (9 pin connector - DB9) $35.00

Download WinCT balance communication software here for FREE.

  External Weights Weighing Mass Mass Weights External Calibration
Calibration Weights

600g ASTM Class 1 (± 1.85 mg) with NO Cert $132.00
500 g ASTM Class 6 (± 50 mg) cal mass $20.00 - NO Cal Cert.
500g ASTM Class 2 (± 2.5 mg) with NO Cert $102.00
500g Calibration Weight Class 1 with NVLAP (± 1.2 mg) $287.00
300g ASTM Class 2 (± 1.5 mg) with NO Cert $82.00
300g ASTM Class 1 (± 0.75 mg) with NVLAP Cert $194.00
200 g ASTM Class 6 (± 20 mg) cal mass $15.00 - NO Cal Cert.
200g ASTM Class 2 (± 1.0 mg) with NO Cert $80.00
200g ASTM Class 1 (± 0.50 mg) with NVLAP Cert $235.00
100 g ASTM Class 6 (± 10 mg) cal mass $10.00 - NO Cal Cert.
100g ASTM Class 2 (± 0.50 mg) with NO Cert $68.00
100g ASTM Class 1 (± 0.25 mg) with NVLAP Cert $139.00
1g-1000g 13 piece Class 1 Mass Set with NVLAP Cert $2763.00
1g-500g 12 piece Class 1 Mass Set with NVLAP Cert $2063.00
1g-200g 10 piece Class 1 Mass Set with NVLAP Cert $1112.00
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 $1955.00
Cal-Paks 500g, 50g, 20mg Class 1 with NVLAP $473.00
Cal-Paks 500g, 50g, 200mg Class 1 with NVLAP $473.00
Cal-Paks 500g, 50g, 2g Class 1 with NVLAP $487.00

Note: See our complete line of certified weights and weight sets here
Digital Scales
Back side of scale offers standard RS-232 & sprint bubble indicator
RS-232 cable can be purchased at any computer store: Modem cable DB9(F) to DB9(F) or interfacing with a PC I/O 25 pin connector then a Null Modem cable DB9(F) to DB25(F)
Select from 18 Compact Balances to meet your specific weighing needs

Cap (g) x Read (g)

Legal For Trade (e) Price

120 x 0.01 g

No   $358.80
EK-200i 200 x 0.01 g No   $379.50

300 x 0.01 g

No   $396.75

400 x 0.01 g

No   $445.05

600 x 0.01 g

No   $517.50
EK-610j 600 x 0.01 g Yes 0.1 g $259.77
EK-600i 600 x 0.1 g Yes 0.1 g $334.00
EK-1200i 1200 x 0.1 g Yes 0.1 g $290.00
EK-2000i 2000 x 0.1 g No   $389.85
EK-3000i 3000 x 0.1 g No   $417.45
EK-4100i 4000 x 0.1 g No   $500.25
EK-6100i 6000 x 0.1 g No   $610.65
EK-6100j 6000 x 0.1 g Yes 1 g $254.97
EK-6000i 6000 x 1 g Yes 1 g $409.23
EK-12Ki 12000 x 1 g Yes 1 g $503.70
Triple Range EK Series Compact Balances
Model Cap (g) x Read (g) Legal For Trade (e) Price
EW-150i 30 x 0.01 g
60 x 0.02 g
150 x 0.05 g
No   $331.50
300 x 0.1 g
600 x 0.2 g
1500 x 0.5 g
Yes 0.1 g
0.2 g
0.5 g
3000 x 1 g
6000 x 2 g
12000 x 5 g
Yes 1 g
2 g
5 g
Are you looking for greater weighing capacity and a digital scale that increments in 0.01 gram intervals? How about a scale that operates on standard AA batteries verses the expensive rechargeable battery battery required for the EK-600i. Then check out the Ohaus SJX1502N/E since this is a nice scale and it will cost you LE$$ money than the EK600i. See as we unbox and review all the features of the new Ohaus Scout SJX1502. What comes with the scale, how do you setup the scale, where do the batteries go, found the underhook?? All your questions can be answered by watching this informative YouTube video above.
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