Precision Weighing Balances
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Are you looking for 320 grams weighing capacity to four decimal places in grams? Yes the Mettler-Toledo JS1603C/A analytical balance offers a weighing capacity of 320 grams and increments in 0.1 milligram divisions. That is one 10,000th of a gram at a mind boggling price. Have you seen what a comparable balance will cost you? Ohaus EX324, A&D GH-300, even AND Weighing's low end HR300i which is a stripped down money will cost you more money than the Mettler-Toledo JS1603C/A.

If you noticed the Mettler JS1603C/A looks similar to the Mettler Toledo ML304E Classic ML Analytical Series. The Mettler JS balances are sold to the jewelry marketplace while the Mettler Toledo Classic ML balances are sold to the laboratory marketplace. There are some minor differences between the and we always recommend you download the user manual to understand the product better and if you have any questions give us a call at 978-521-7095 and a product specialist is available to help answer your questions.

If you are a jeweler this Mettler Toledo JS1603C/A is a Legal for Trade Class I digital scale offering 1600 ct with 0.001 carat readability. The “d” (value of scale division) is 0.001 carats or 0.0001 grams and the “e” (value of verification scale division) is 0.01 carats or 0.001 grams. The digital balance meets the requirements as a Class I weighing device as defined by Handbook 44 and complies with the applicable technical requirements of "NIST Handbook 44: Specifications, Tolerances and Other Technical Requirements for Weighing and Measuring Devices". All this information can be reviewed by downloading the Certificate of Conformance # CofC 11-113.

When the Department of Agriculture Weights and Measures division tells you need a NTEP Class I balance that has a verification scale division of 0.001 gram the Mettler JS1603C/A meets the requirement. This high degree of accuracy makes the JS1603C/A a good choice for pharmacy compounding applications. You can learn more about verification division (e) and displayed division (d) by downloading NIST Handbook 44 - 2014 Edition here and review Section 2.

Gem stones can you cost you, not only in price, but in profits and reputation if there is disagreement in weight. Jewelers must be extremely precise weighing diamonds and other precious stones since a difference of 1 points (99 points to 100 points) can change the value of a stone by over 30% in some situations. A one carat diamond is the same thing as a 100 point diamond. There are 5 carts to 1 grams. Accurate weighing is a must and this Mettler diamond scale meets the requirements for most precious stone dealers and distributors.

Weighing diamonds is so important and in many states the law requires a NTEP Approved balance like the JS1603C/A. Whether you are simply weighing small loose diamonds or large polished gem stones for a collector or museum you need accurate carat weight. Choosing a Mettler Toledo carat weight balance means choosing the right weighing instrument to benefit both your professional standing and peace of mind.

MettlerToledo JS1603C/A offers a 3.54" diameter stainless steel weighing platform with a large spacious 3 door glass breeze break. This digital balance features motorized internal calibration, backlit LCD display and Mettler's MonoBloc weighing technology. Jewelry manufacturers diamond wholesalers and retail jewelry stores can weigh up to 1600 carats and the balance increments in 0.001 carat divisions. You can change the weigh modes very easy. In grams the JS1603C/A offering a maximum weighing capacity of 320 grams with readability of 0.0001 grams.

See the full line of Mettler Toledo Jewelry Balances we offers with different weighing capacities and readabilities HERE.

Mettler Toledo JS1603C/A diamond scale

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Brand Model Capacity Readability
Mettler Toledo JS1603C/A diamond scale 700 ct 0.001 ct
Modes
Add. Features
  • Carats
  • Grains
  • Pounds
  • Ounces
  • Pennyweight
  • Grams
  • Troy Ounces
  • Legal For Trade
  • Parts Counting
  • RS-232c
  • Internal Calibration
  • NTEP Class II
  • Below Weighing
Comparable Scales

A&D Weighing analytical balance GH-300 - $3669.00

Ohaus EX324 digital lab balance - $4105.50

Ohaus analytical balance DV314C - $4560.25

Sartorius Secura224-1S lab balance - $3497.75

Sartorius Cubis MSE324S-100-DU - $6561.00

Sartorius Cubis balance MSU324S-100-DU - $7555.50

Sartorius Cubis MSA324S-100-DU - $8113.50

Sartorius Secura324-1S Lab Balance - $4114.00

Sartorius MSU524P analytical balance - $7452.00

Sartorius Analytical Balance ENTRIS224-1S - $1709.40

A&D Weighing GR-300 lab balance - $3326.00

Ohaus Adventurer AX324 Internal Cal - $3151.80

Sartorius Cubis MSU324P-100-DU - $6804.00

Sartorius MSE324P Cubis Balance - $5809.50

Sartorius Practum 224-1S lab balance - $1953.20

Ohaus AX224N Class I NTEP - $3033.65

Sartorius Quintix 224-1S lab balance - $3157.75

Ohaus SJX323N/E Class II Carat Scale - $619.00

Mettler Toledo JP105DUG/A semi micro balance - $4629.00

Sartorius Cal-pak calibration weight set 200g, 20g, 200mg - $355.00
MSRP: $2495.00
YOU PAY $1899.00
Mettler JS1603C/A Carat Balance
gem balance
Mettler Toledo JS1603C/A Carat Scale

Mettler Jewelry Standard Series - Gold Carat Scales
Download the User Manual to understand all the functions & features

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

  External Weights Weighing Mass Mass Weights External Calibration

200g ASTM Class 2 (± 1.0 mg) with NO Cert $80.00
200g ASTM Class 1 (± 0.50 mg) with NO Cert $151.00
200g ASTM Class 1 (± 0.50mg) with NVLAP Cert $235.00
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 200g, 20g, 200mg Class 1 with NVLAP $355.00
Cal-Paks 200g, 20g, 2g Class 1 with NVLAP $372.00

Mettler Toledo JS Jewelry Standard Series Jewelry Balances

Precious metals and stones can you cost you, not only in price, but in profits and reputation if there is disagreement about gemstone weighing. This is why gold and diamond weighing precision is so important. Whether you are simply weighing an important sample of gold or diamonds, analyzing sample weights, or determining densities, quality weighing is especially important. Choosing a Mettler Toledo balance means choosing the right weighing instrument to benefit both your professional standing and peace of mind.

Ten pre-programmed applications- Mettler JS electronic jewelry balances have 10 application modes to suit a variety of weighing needs. Note - in order to use any of these functions they must first be set on one of the user selectable function keys.
  • Piece Counting
    • Count pieces of uniform weight quickly and easily

  • Percent Weighing
    • Check a sample weight as percentage of a reference weight

  • Check Weighing
    • Check the deviation of a sample weight, within a tolerance limit, to a reference weight

  • Statistics

  • Totaling

  • Multiplication Factor Weighing

  • Division Factor Weighing

  • Density Determination

  • Routine Test
    • Allows you to determine the sensitivity of the balance

  • Diagnostics
    • Automatic repeatability testing, display test, motor test, scale history
Best choice for gemstone traders - Working with diamonds and other gemstones requires absolute precision a small weight discrepancy means loss of money. So it is essential to have a precise and reliable weighing instrument. JS diamond and gemstone scales have features that make weighing precious stones and metals easy and efficient.
  • Motorized internal calibration provides hassle-free adjustment of your jewelry balance.

  • High contrast backlit LCD display for certainty of gold weight measurements

  • RS232 interface for connection of jewelry balance to PC, auxillary display, or printer

  • Underhook weighing for specific gravity and below scale weighing

protective housing
Designed to Last - Mettler provides several quality features in its jewelry balances to assure that they fulfill you gold jewelry weighing needs for years to come.
  • High-quality die cast aluminum housing provides protection for the load cell from dust and moisture

  • Overload protection assures that even an accident will not fatally damage the balance

  • Protective cover for when the balance is not in use assures that inadvertent damage will not happen to the weigh pan or keys

  • All of these features also make the JS digital jewelry balances easy to clean
Custom Weigh Units - JS series carat balances offer two ways of creating your own customized weigh units by either multiplying or dividing by a predefined factor.
  • Multiplication factor weighing
    • Requires the function to be set to one of the user selectable function keys
    • Multiplies the sample weight value in grams by a predefined factor and calculates it to a predefined number of decimal places
  • Division factor weighing
    • Also requires the function to be set to one the user selectable function keys
    • Divides the sample weight value in grams by a predefined factor and rounds it to a predefined number of decimal places
Self Diagnostic Testing- Use the JS gold jewelry balance's diagnostic application to find errors with the scale faster and more efficiently.
  • Requires a printer or PC be connected to the balance to display the results of the diagnostics

  • Repeatability Test allows you to repeat tests with internal weight for a given number of times

  • Display Test to assure that the backlit LCD display is working properly

  • Key Test to test the operation of the keys of the balance

  • Motor Test allows you to test the motor used for internal calibration. Requires internal calibration feature

  • View or print the history of the balance including the operation time, number of weighings, number of key presses, and number of motor movements

Accurate and Fast - Carat balances from Mettler Toledo are designed to deliver accurate, trustworthy and repeatable results every time. JS series digital gold balances feature a MonoBloc weighing cell and internal calibration weight for rapid settling and fast response times
  • MonoBloc weigh cell provides a robust and accurate heart to the Mettler JS gold balance with less hysteresis than other forms of weigh cells

  • Motorized internal calibration system assures quick and easy automatic calibration so you can start weighing sooner

  • Adjustable levelling feet and bubble for proper set up
density determination
JP or JS Gold Jewlery Balance ?

The main difference between the JS and JP gold jewelry balances is the number of additional features. For example, with the JP gem weighing scales you get Mettler's FACT automatic internal calibration system. You also get two data interfaces, either two (2) RS232 or one (1) RS232 and one (1) USB. The display of a JP is also different from that of a JS, JP has a high contrast HCD display while JS has a backlit LCD display. Finally, JP jewelry balance have built in density determination software to augment your weighing options.



Model Cap x Read Pan Size Linearity Your Price
$4629.00
$1739.00
$1899.00
$1419.00
$1539.00
$1646.00
$1519.00
$3725.00
$543.00
$543.00

 
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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