Precision Weighing Balances
Your online source for balances, scales & calibration weights @ discount prices

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Ohaus Explorer EP22001 high capacity balance (22000g x 0.1g) can be purchased 2 ways - the standard Explorer EP22001 which has no internal calibration; the EP22001C which is the EP22001 with motorized internal calibration (check the box in the option section for Internal Calibration. The prefix "C" designate Internal Calibration. None of the high capacity Ohaus Explorer balances 12kg and higher in capacity are Legal for Trade/NTEP Approved.

Explorer Pro EP22001 precision toploader balance features large 11" x 14" platform. The Ohaus Explorer EP22001 digital industrial scale has been upgraded with check and differential weighing, statistical functions, formulation, and filling.

Precision Weighing Balances supplies balances and scales to many of the materials testing labs for Department of Transportation offices throughout the USA. Whether you're performing testing for DOT asphalt, soil sampling and Super-Pave applications to meet some ASTM or AASHTO test requirement you can call Precision Weighing Balances' expert staff in help in selecting the best balance for your weighing needs.

Although the EP22001 is targeted for this segment market along with applications in concrete, asphalt production, agriculture and quality control most of our customers purchase the Sartorius CPA34001S over the Ohaus EP22001 scale.

The reason typically for not selecting the Ohaus EP22001 is it only offers 2 year warranty, has a smaller 11" x 14" weighing platform and the real downfall with the EP22001 is the linearity is only ± 0.4 gram. Linearity is the accuracy of the balance and you review the definition for linearity here. The Sartorius CPA34001S has linearity specifications to ± 0.2 gram. Some people might say 0.2g verses 0.4g is twice the balance.

The Sartorius CPA34001S (34000g x 0.1g) offers a 3 year warranty, larger 11.7" x 15.6" weighing pan, IP-53 Rating so it is dust protected and also against "sprayed water", LCD display with adjustable backlight to see it in poorly lighted areas like mobile soil testing labs trailers on constructions sites and the linearity is ± 0.2 gram.

Many of the DOT Materials managers are buying the Sartorius CPA since it is made in the USA and they have federal funds requiring them to comply with the Buy American Act clause. FAR Part 25.003 requirements state that domestic end products are preferred over foreign end products, and the Ohaus Explorer is not made in USA.

Is the Ohaus EP22001 too expensive for your budget? Many people call us looking for the absolute best value in a quality balance that Precision Weighing Balances can offer in a precision balance and the answer again and again is the A&D GP industrial balances. We believe the value is unmatchable in the AND Weighing GP20K since you get lightening fast weighing results, 21000 grams weighing capacity with 0.1 grams readability, large 15.1 inches x 13.5 inches weighing platform plus a 5 year limited manufacturer warranty at a lower price than the EP22001. Both Ohaus and AND are good digital scales and you need to weigh the differences in your buying decision.

Ohaus EP22001 asphalt scale

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Brand Model Capacity Readability
Ohaus EP22001 asphalt scale 22000 g 0.1 g
Add. Features
  • Carats
  • Grains
  • Pounds
  • Ounces
  • Pennyweight
  • Grams
  • Troy Ounces
  • KiloGrams
  • Parts Counting
  • RS-232c
Comparable Scales

Scientech material testing lab SHC20 scale - $2895.00

Scientech SHC30 high capacity scale - $3595.00

Adam Equipment PGL20001 Precision Balance - $2295.00

Sartorius CP34001S Hi Capacity - $3348.75

Sartorius LE16001S Digital Scale - $1999.99

Sartorius Cubis MSA5201S Balance - $4068.00

A&D Weighing GP-20K materials testing - $2880.00

A&D Weighing GP-30K aggregate scale - $3435.00

A&D Weighing GP-30KS industrial scale - $3618.75

Sartorius CPA34001P differential weighing - $3632.00

Sartorius Digital Scale CPA16001S - $3336.00

A&D Weighing GX-20K Industrial Scale - $2691.00

A&D Weighing GF-20K Dust Proof Scale - $2495.00

Used CP16001S DEMO Scale - $3520.00

Sartorius Cubis MSU12201S-000-D0 - $4855.50

Ohaus EX10201 precise scale - $3051.50

Mettler Toledo SB16001 Legal for Trade - $2899.99

Mettler Toledo JP32001G/A Troy Ounce Weighing - $4895.00
MSRP: $4263.00
YOU PAY $3623.55
Ohaus Voyager Pro High Capacity Balance
Ohaus Explorer Pro Balance
OHAUS EP22001 Explorer Pro High Capacity Balance
PWB Discount Price $3623.55
The Ohaus EP32001 has been discontinued and no longer in production. The is a replacement model in the new Ohaus Pro Series.. Call us at 978-521-7095 for more details.
S&H via UPS ground $65.00
Capacity x Readability 22,000 g x 0.1 g
(std deviation)
0.1 g
Linearity ± 0.4 g
Weighing units gram, 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, Filling, Differential Weighing, Formulation, Quick Check Weighing, Statistics
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 <=4 seconds
Internal Calibration Motorized Internal Cal is available as an OPTIONAL Factory installation for an additional fee.
External Calibration Optional 20000 g ASTM 1 external weight for span calibration
Legal for Trade NTEP is NOT Available on any of the Ohaus Explorer Series 12kg and higher in capacity CofC 98-053A5
Display LCD Dot Matrix w/CCFL Backlight
Display Size (in/cm) 2.5" x 4.7" / 64 x 120 cm
Display (pixels) 240 x 128 pixels
Pan size (in/cm) 11" x 13" inches / 27.9 x 33 cm
Dimensions WxHXD 14" x 5.25" x 16 inches
35.5 x 13.3 x 40.6 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 27 lb / 12.3 kg
laboratory balance Data Sheet ohaus lab balances Download the brochure loaded with tons of information.
laboratory scale User Manual precision lab balance Download the user manual.  If you have a question how it works it is in the manual.

laboratory balance

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)

Ohaus balances Optional Accessories

Ohaus EP22001 with factory install internal calibration $249.00
Lock Down Security Device $127.00
Explorer Pro In-Use Cover $45.00
RS-232 Cable, IBM 9 pin $140.00
RS-232 Cable, IBM 25 pin $140.00
WinWedge Std Software Wedge for Windows $349.00
Granite Isolator 13 x 15 inch $525.00
Ohaus 80251992 Thermal Printer $432.00
80252042 Dot Matrix Print (Requires RS232 Cable Sold Separately) $508.00
RS232 Cable & Adapter used with 80252042 Printer to Discovery Series $140.00
   calibration weights mass set traceable weight weights

1mg-100g 21 Piece Class 1 Weight Set with NVLAP Cert $1995.00
9 pc. Weight Set (100 g - 1 g) Class 1 with NVLAP $986.00
100g ASTM Class 1 (± 0.25 mg) with NVLAP Cert $145.00
100g ASTM Class 1 (± 0.25 mg) with NVLAP Cert $145.00
200g ASTM Class 1 (± 0.50mg) with NVLAP Cert $252.00
500g Calibration Weight Class 1 with NVLAP (± 1.2 mg) $271.00
500g Calibration Weight Class 2 with NVLAP (± 2.5 mg) $202.00
1000g Calibration Weight Class 1 with NVLAP (± 2.5 mg) $214.00
1000g Calibration Weight Class 2 with NVLAP (± 5.0 mg) $204.00
1kg ASTM Class 6 (± 100 mg) cal mass $40.00 - no Cal Cert.
2 kg Calibration Weight Class 1 with NVLAP (± 5 mg) $266.00
2 kg Calibration Weight Class 2 with NVLAP (± 10 mg) $264.00
2kg ASTM Class 6 (± 200 mg) cal mass $60.00 - no Cal Cert.
5000g ASTM Class 1 (± 12 mg) $426.00
5kg Calibration Weight Class 1 with NVLAP (± 12 mg) $474.00
5kg ASTM Class 6 (± 500 mg) cal mass $100.00 - no Cal Cert.
Cal-Paks 50g, 5g, and 200mg Class 1 with NVLAP $252.00
Cal-Paks 100g, 10g, and 200mg Class 1 with NVLAP $304.00
Cal-Paks 100g, 10g, 2g Class 1 with NVLAP $319.00
Cal-Paks 200g, 20g, 2g Class 1 with NVLAP $335.00
Cal-Paks 500g, 50g, 2g Class 1 with NVLAP $438.00
Cal-Paks 1kg, 100g, 2g Class 1 with NVLAP $561.00
Cal-Paks 2kg, 200g, 2g Class 1 with NVLAP $819.00
Cal-Paks 5kg, 500g, 20g Class 1 with NVLAP $1050.00
Weighing Pans
YWP06G Weigh Pan w/ 3.25" Diameter and 0.75" depth $30.00
YWP04G Gem Pan w/ 6.75 inch Diameter with 0.8 inch Depth $30.00
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
  • 10 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
explorer lab balances

explorer professional balance
The spirit bubble indicator is located on the front of the balance so you can always verify your lab balance is level.  Balances must always be level to correctly transfer the force applied to the weighing balance parallel to the weigh cell. If the balance is off-centered (not level) this generates a counter force to the suspension guides of the weigh cell resulting in inaccurate or distorted weighing results.
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.

  • Weighing:
    Basic weighing with primary and secondary weighing units, time, date and capacity bar.
  • Dynamic / Animal 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:
    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.
  • Differential Weighing
    stores tare and weight values so a sample can be dried and the difference calculated at a later time. Up to 5 batches with up to 80 samples per batch can be stored. Samples can be added to the applications library. Batch and individual samples can be accommodated.
  • Formulation
    Explorer Pro Balance can store between 200 minimum and 500 formulations limited only by the memory capacity of the resident library. Each formulation can be named and have up to 10 components specified and identified by name. Once the formulations are stored in the balance library, they may be recalled and used at any time. Each component of a given formulation can be specified as to its weight or percentage. The balance will display each element of a formulation on a dual bar graph as a percentage and also displays the desired weight. Thus, each product may be placed on the pan until 100% is indicated. Names are limited to 10 characters.
  • Quick Check Weighing
    permits you to place a reference sample or a sample weight on the balance pan which is used as a
    reference weight to measure against similar samples. A single bar display indicates up to 100% of the capacity of the balance,
    the difference in weight between the original sample and succeeding samples is displayed. The difference in percentage is also
    shown along with the reference weight. The large numeric display indicates the weight of the subject.
  • Statistics
    is used when it is desired to compare a number of samples and examine the relative deviation of the samples along
    with other statistical data such as mean, sum, maximum and minimum and difference. A minimum of three samples is required
    in this program. Statistics contains a number of pop-up menus which include standard deviation, mean, sum, maximum,
    minimum, difference, relative deviation, auto sample detect and sample size. All of these can be set ON or OFF except sample
    size which can be set for a particular number. When a printer or computer is connected to the balance, all statistical information
    can be observed and printed.
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. underhook weighing
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.
Four methods of density determinations can be made with the Voyager Pro balance.
The Four Methods of Density Determination:
  1. Solids more dense than water
  2. Solids less dense than water
  3. Liquid density
  4. Porous material (impregnated with oil).
specific gravity scale
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.
Select from 4 different Analytical Balances to suit your lab application.
Model Cap x Read Pan Size Linearity Your Price
EP64 62 g x 0.1 mg 3.5" Ø ± 0.2 mg $2090.70
EP114 110 g x 0.1 mg 3.5" Ø ± 0.2 mg $2269.80
EP214 210 g x 0.1 mg 3.5" Ø ± 0.2 mg $2626.20
EP214D 100 g x 0.1 mg
100-210g x 1 mg
3.5" Ø ± 0.2 mg
± 0.5 mg

Select from 15 different Precision Balances to suit your weighing needs.

Cap x Read (g)

Pan Size Linearity (g) Your Price
EP213 210 x 0.001 4.7" Ø
± 0.002 $1664.10
EP413 410 x 0.001 4.7" Ø
± 0.002 $1941.30
EP613 610 x 0.001 4.7" Ø
± 0.002 $2214.90
EP413D 100 x 0.001
410 x 0.01
4.7" Ø
± 0.002
± 0.005
EP612 610 x 0.01 6.8" x 6.8"
± 0.02 $1599.30
EP2102 2100 x 0.01 6.8" x 6.8"
± 0.02 $1664.10
EP4102 4100 x 0.01 6.8" x 6.8"
± 0.02 $1941.30
EP6102 6100 x 0.01 6.8" x 6.8"
± 0.04 $2214.90
EP4102D 1000 x 0.01
4100 x 0.1
6.8" x 6.8"
± 0.02
± 0.05
EP4101 4100 x 0.1 8" x 8" ± 0.1 $1426.50
EP6101 6100 x 0.1 8" x 8" ± 0.1 $1599.30
EP8101 8100 x 0.1 8" x 8" ± 0.1 $1773.90
EP12001 12000 x 0.1 11" x 13" ± 0.4 $3337.10
EP22001 22000 x 0.1 11" x 13" ± 0.4 $3623.55
EP32001 32000 x 0.1 11" x 13" ± 0.4 $3813.95

Attention government buyers required to meet the Buy American Act clause. The Ohaus Explorer is NOT made in the USA, but we do offer the Sartorius CPA34001S which is made in the USA. The Sartorius CPA34001S also has a longer warranty (Sartorius 3 years verses Ohaus is only 2 years)

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