Ohaus Explorer EP613 milligram balance can be purchased 3 ways - the standard Explorer EP613 which has no internal calibration and is NOT Legal for Trade; the EP613N which IS Legal for Trade with no internal calibration (check the box in the option section for Legal for Trade and it cost an additional $100.  The prefix "N" designate Legal for Trade); the EP613CN which is the EP613 with motorized internal calibration and IS Legal for Trade (check the box in the option section for Internal Calibration and it cost an additional $200).  The prefix "CN" designate Internal Calibration & Legal for Trade).

Ohaus Explorer EP613 (610g x 0.001g) features an integrated draft shield enclosure.  The enclosure is required due to the extreme sensitivity.  Merely waving your hand over the weighing platform with result in air turbulence getting under the weighing pans and causes erratic readings.

In some applications when the balance is placed in a glove box or you are weighing objects larger than the door opening of the draftshield you can run into problems.  An example might be weighing an 8-inch silicon wafer to determine a coating applied - you just can't get the wafer in the fixed draft shield.  In this situation an analytical balance with the glass draftshield removed would be operated in a larger enclosure, again to minimize air turbulence.

If you foresee needing to operate the milligram balance without the glass enclosure we recommend you review the Sartorius GC2502 milligram balance since this balance offer a removable glass draftshield.  Another benefit with a removable glass draftshield is easy of cleaning the balance.

Additional the Sartorius GC2502 milligram balance is 500g x 1mg, features an all glass draftshield design for optimal illumination while the Ohaus Explorer has 3 sides of glass, and best of all the Sartorius GC2502 is priced less than the Ohaus EP613 milligram balance.

One design issue you should be aware of with the Explorer and Voyager Series outfitted with internal calibration when the balance is used in the non-NTEP mode is the inability to disable the use of internal calibration. The Ohaus line is the only balance we know of that does not allow you to disable the internal calibration.  Where this becomes an issue is most calibration A2LA Certification Calibration Companies will NOT calibrate a balance unless the internal calibration can be disengaged.

If you need a NTEP Approved (a.k.a. Legal for Trade) precision balance and the Ohaus EP613CN is too expensive then you can buy the A&D GF-300N which is also "Legal for Trade" around $1000. 

One design issue you should be aware of with the Voyager and Explorer Series outfitted with internal calibration when the balance is used in the non-NTEP mode is the inability to disable the use of internal calibration.  The Ohaus line is the only balance we know of that does not allow you to disable the internal calibration.  Where this becomes an issue is most calibration A2LA Certification Calibration companies will NOT calibrate a balance unless the internal calibration can be disengaged.  If your balance is going to require A2LA Certification the Sartorius GC2502 milligram balance may be a better choice.

Ohaus Explorer Pro Balances are available in both analytical and precision configurations, in a variety of capacities.  The Explorer Pro line of precision balances offers capacities ranging from 210 x 0.001 grams to 32,000 x 0.1 grams.  The analytical balances line offers capacities of 62, 110 and 210 grams and you can review them all at the bottom of this web page.

Before you decide to purchase an Ohaus EP613 milligram balance we suggest you review the Sartorius ED623S. Both milligram balances weigh just over 600 grams in 0.001 gram increments, but you can save hundreds of dollars when you choose an ED623S from Sartorius.

When you purchase an ED623S with external calibration, you are given the option to buy a data printer or WinWedge data transfer software at a deep discount price. Sartorius data printers regularly sell for $860, but if you purchase an ED623S, we will cut the price of the YDP03-OCE down to $399!  This exclusive offer from Precision Weighing Balances will only be honored when you make your selection at the time of purchase.  Sartorius ED623S milligram balances are in stock and ready for immediate delivery.

Ohaus EP613 Science Balance

OHAUS EP613 Explorer Pro Milligram Balance
MSRP	$2275.00
PWB Discount Price	$1826.16
S&H via UPS ground	$30.00
Capacity x Readability	610 g x 0.001 g
Repeatability (std deviation)	0.0015 g
Linearity	± 0.002 g
Weighing units	gram, milligram, kilogram, pound, ounce, ounce troy, carat, pennyweight, Hong Kong Tael, Singapore Tael, Taiwan Tael, mommes, grain, tical, Newton, custom
Application Modes	Weighing, Parts Counting, Animal Weighing, Check Weighing, Percent Weighing, Filling, Gross-Net-Tare Weighing
Features	RS232 Port, Auxiliary Display Port, GLP Protocol, Selectable Language, Display Text, Selectable Displayed Information Settings, Selectable Environmental Settings, Selectable Auto-Print Settings, Integral Weigh Below Hook, Contrast & Brightness Control, Protective In-Use cover
Tare range	To capacity by subtraction
Stabilization time	3 seconds
Internal Calibration	Motorized Internal Cal is available as an OPTIONAL Factory installation for an additional $200
External Calibration	Optional 500 g ASTM 1 external weight for span calibration
Legal for Trade	NTEP CofC 98-053A5 Approval only available when purchased with OPTIONAL Internal calibrations. 610 g x 0.01 g (NTEP mode)
Display	LCD Dot Matrix w/CCFL Backlight (240 x 128 pixels )
Display Size (in/cm)	2.5" x 4.7" / 64 x 120 cm
Draft Shield (free height above platform)	10.2 inches / 25.9 cm
Pan size (in/cm)	4.7" Ø inches / 12 Ø cm
Dimensions WxHXD	8.5" x 13.5" x 14.5" inches 21.5 x 35.5 x 37 cm
Power requirements	100-120 V AC, 220-240 V AC, 50/60 Hz
Operating temperature	50° to 104°F / 10° to 40°C
Optional Accessories	Internal Calibration, In-Use Cover, Security Device, SF-42 Compact Impact Printer Density Determination Kit, External Calibration, TAL Software, RS-232 Cable
Warranty	2 Year Warranty
Net Weight	14.8 lb / 6.7 kg
Data Sheet	Download the brochure loaded with tons of information.
User Manual	Download the user manual.  If you have a question how it works it is in the manual.

Ohaus Explorer Pro Laboratory Series Balances Download the User Manual to understand all the functions & features (select the model & any of the options and then the"BUY HERE" image) EP64 (0-62g x 0.0001g) $1723.16 Ohaus EP114 (0-110g x 0.0001g) $1871.16 Ohaus EP214 (0-210g x 0.0001g) $2166.16 Ohaus EP214D (0-100g x 0.0001g)(100-210g x 0.001g) $1912.16 Ohaus EP213 (0-210g x 0.001g) $1371.16 Ohaus EP413 (0-410g x 0.001g) $1601.16 Ohaus EP413D (0-100g x 0.001g)(100-410g x 0.01g) $1371.16 Ohaus EP613 (0-610g x 0.001g) $1536.13 Ohaus EP612 (0-610g x 0.01g) $1318.16 Ohaus EP2102 (0-2100g x 0.01g) $1371.16 Ohaus EP4102 (0-4100g x 0.01g) $1601.16 Ohaus EP4102D (0-1000g x 0.01g)(1000-4100g x 0.1g) $1371.16 Ohaus EP6102 (0-6100g x 0.01g) $1826.16 Ohaus EP4101 (0-4100g x 0.1g) $1175.16 Ohaus EP6101 (0-6100g x 0.1g) $1318.16 Ohaus EP8101 (0-8100g x 0.1g) $1461.16 Ohaus EP12001 (0-12000g x 0.1g) $2395.16 Ohaus EP22001 (0-22000g x 0.1g) $2592.16 Ohaus EP32001 (0-32000g x 0.1g) $2788.16

Optional Accessories Specific Gravity Kit (aftermarket item, not a product from Ohaus) $79.95 Ohaus Density Determination Kit for 0.1/1mg balances $222.00 Factory installed Internal Motorized Calibration $250.00 NTEP approved version $100.00 Lock Down Security Device $102.00 Explorer Pro In-Use Cover $36.00 RS-232 Cable, IBM 9 pin $91.00 RS-232 Cable, IBM 25 pin $91.00 WinWedge Std Software Wedge for Windows $259.00 Granite Isolator 13 x 15 inch $435.00 SF42 Impact Printer (Requires RS232 Cable Sold Separately) $361.00 RS232 Cable, SF42 Printer to Explorer Pro $88.00 Spare/Extra Ribbon for SF42 Printer $25.00 Spare/Extra 5 rolls of printer paper for SF42 Printer $35.00 AD-1683 - Static Eliminator $1095.00

Optional Calibration weight and weight sets includes Certificate of Calibration showing conventional mass correction. 1mg-100g 21 piece Ulti Mass Set $1499.00 10mg-100g 17 piece Class 2 Mass Set $1205.00 10mg-50g 16 piece Class 1 Weight Set $1177.00 1g-100g 9 piece Class 1 Calibration Mass Set $764.00 1g-50g 8 piece Class 2 Certified Weight Set $725.00 100g-1kg 5 piece Class 2 Calibration Weight Set $645.00 50g ASTM Class 1(± 0.12 mg) cal mass $89.00 100g ASTM Class 1(± 0.25 mg) cal mass $94.00 200g ASTM Class 1(± 0.50 mg) cal mass $134.00 500g ASTM Class 1(± 1.2 mg) cal mass $159.00 1kg ASTM Class 1(± 2.5 mg) cal mass $174.00 2kg ASTM Class 1(± 5 mg) cal mass $219.00 5kg ASTM Class 1(± 12 mg) cal mass $369.00 1000 g ASTM Class 6 (± 100 mg) mass $40.00 2000 g ASTM Class 6 (± 200 mg) mass $60.00 5000 g ASTM Class 6 (± 500 mg) mass $100.00

Weighing Pans YWP06G Weigh Pan w/ 3.25" Diameter and 0.75" depth $25.00 YWP05G Weigh Pan w/ Spout & 3.5" Dia. w/ 1.75" Depth $50.00 YWP04G Gem Pan w/ 6.75 inch Diameter with 0.8 inch Depth $25.00 YWP03G Weighing Gem Pan w/ 5.25" Dia. & 0.8" Depth $25.00 YWP777G Weigh Pan w/ Pour Spout 2.4" Dia. & 0.6" Depth $25.00

The Explorer Pro Series
of standard level balances was designed for simplicity and includes the industry ’s easiest user interface for effortless setup and operation; no training is required.  The Explorer Pro offers all the features and durability found in high-end laboratory balances plus the traditional Ohaus quality and support for years of trouble- free use!
Standard Features Include:
Simple 2-key menu navigation Text prompts for fast setup 7 Application modes plus below balance weighing Brilliant backlit high resolution dot matrix display RS232 port for easy communication with computer or printer GLP compliant with user selectable outputs 5 Language operational display text Protective in-use cover and security bracket Industry leading warranty and support NTEP Legal-For-Trade approved models available
Application Modes
Percent Weighing: allows you to place a reference load on the pan, and check other samples as a percent of the reference load.  Each new sample will be a "percentage" of the original reference, the display shows the variance in – or + percent of the reference. Gross/Net/Tare: is an application mode commonly used when you need to identify the individual weights of the container, the material and both together.  The container weight is the Tare weight, the material is called the Net weight and the container and material together are called the Gross weight.  The Net weight is displayed on the readout. Weighing: Basic weighing with primary and secondary weighing units, time, date and capacity bar. Dynamic / Animal Weighing: Dynamic weighing allows the user to weigh unstable matter that may be moving. This mode can be set to manual, semi-automatic, or automatic; the displayed data includes filtered weight and unfiltered weight.  Displayed data also includes filter level, capacity bar graph and operation mode (manual, semi or auto). Parts Counting: Enhanced parts counting features include auto sample optimization, user definable sample size and manual entry using scroll keys.  The "Parts Counting Check" feature allows for quickly checking a sample of pieces against a preset criteria, with results displayed as the number of pieces.  The "Parts Counting Fill" feature allows for quickly checking a sample of pieces against an established criteria, with results displayed as a percentage of the preset target. Filling: Filling permits the user to preset a target reference weight, then add material to the balance to meet the target weight.  The display shows the preset target weight and the percentage of the target by monitoring the differential data, the fill bar is split in two sections for fast filling up to 90%, then slower accurate fill to reach target (100%) weight. Checkweighing: is used when items need to be checked against a preset target, after the target weight is set, and over/under parameters are established.  Checkweighing is measured as a factor of over the target, under the target, or accept.  The display automatically shows the difference in percent and weight.
Optional Accessories
The Explorer Pro Series offers a complete line of accessories and masses to expand your mass measurement capabilities, including: Density determination kit (for 0.1mg and 1mg balances), modular display upgrade kit (for balances up to 8kg), model SF42 42-column impact printer, auxiliary table display, remote table displays, security devices, RS232 cables, TAL Software WinWedge V1.2, calibration masses.	Shown above is weigh below underhook
Industry Leading Quality and Support
All Ohaus Explorer® Pro balances are manufactured under an ISO 9001:2000 Registered Quality Management System. Our rugged construction and stringent quality control have been hallmarks of all Ohaus products for nearly a century.

Shown above is an image of a Voyager Analytical Balance (the Explorer Analytical Balance looks similar) with $214 OPTIONAL 470007-010 Density Determination Kit
Density
Four methods of density determinations can be made with the Voyager Pro balance.
The Four Methods of Density Determination: Solids more dense than water Solids less dense than water Liquid density Porous material (impregnated with oil).
An accessory density determination kit is designed to be used with Ohaus Explorer Pro balances.  A built-in reference density table for water at temperatures between 10°C and 30°C is included in the balance software.  When making density measurements, the material should weigh at least 10.0 mg on an analytical balance and 100 mg on a precision balance.

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