Precision Weighing Balances
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The Ohaus AV313 has been discontinued by Ohaus and no longer in production. The new replacement model is the Ohaus Adventurer AX423/E. Information on this web page is for reference only for our past customer's that purchased this balance and want to review the specification.. If you need assistance selecting an alternative model give us a call at 978-521-7095 and a balance expert can assist in alternative models.

Ohaus AV313 Adventurer™ Pro is raising the bar on versatility and performance with this 310 gram weighing capacity milligram balance that include a host of new standard features and can be purchased for an additional $255 with internal calibration.

Ohaus Adventurer Pro AV313 Balance is engineered with a new Frameless, Flip-Top Draftshield for added convenience and functionality. All doors, including the front and back panel on the frameless draftshield are simple to remove and replace for fast and easy cleaning. Users frustrated by spilled materials will welcome the easy-access weighing chamber of the Adventurer AV313 milligram balance, as the draftshield is designed without the need of top rails. As a result, users have unsurpassed access to the weighing platform to clean up spills or to place or retrieve materials to be weighed, greatly reducing spillage and virtually eliminating waste. Now there is no need to worry about navigating tight spaces.

Ohaus AV313 Adventurer Pro SmarText™ is Ohaus’ easy to use embedded balance software that utilizes text prompts to guide users through application use and balance setup. Delivered through a 2 line backlit LCD and clearly marked buttons, SmarText tells you what is going on and what you have to do next.

Utilizing the 2-line LCD, SmarText simultaneously displays weight and application specific information such as percent or count. For example, with one touch of the Function button, SmarText will display application reference information such as average piece weight (APW), while displaying a parts count in the weight display.

Additionally, Adventurer Pro has been designed with an up-front level indicator eliminating the need to look behind the balance during the leveling process. A quick glance at the up-front level indicator helps to ensure that the balance is level prior to each use.

Since its introduction, the Ohaus Adventurer Pro has continuously set new standards for versatility, performance and value in an affordable precision balance. Designed with a solid foundation of standard features customers have long appreciated, like an ergonomic leveling system, RS232 connectivity and GLP Data capabilities, the Adventurer Pro now offers a few additional extras created from direct customer feedback.

The AV313 Ohaus Adventurer Pro is built with a large 4.7" stainless steel weighing platform and operates on AC power only. The balances offer six application modes and can perform in 17 US and international weighing units (kg & lb weigh modes not available).

When the Ohaus AV313 milligram balance is first installed, and when it is moved to another location, it must be calibrated to ensure accurate weighing results. The Adventurer AV313 balance can be purchased with the optional internal calibration feature at an additional cost by selecting the factory install internal calibration option. If you decide not to choose this option then the Ohaus scale can be manually calibrated by purchasing an optional external 200 gram calibration mass or 200 gram Cal-Pak.

Adventurer Pro is available in both analytical and precision configurations, in a variety of capacities. The Adventurer Pro line of precision balances offers capacities ranging from 51 x 0.001 grams to 8,100 x 0.1 grams. You can review all of the Ohaus Adventurer Pro digital balances HERE.

Is the Ohaus AV313 too expensive for your budget??? We also offer the AND Weighing FX300i (320 g x 0.001 g) or AND FX500i (520 g x 0.001 g) both priced substantially less than the Ohaus AV313.

Many people call us looking for the absolute best value Precision Weighing Balances can offer in a milligram balance and the answer again and again is the A&D FXi milligrams balances. We can sell the AND Weighing FX300i , FX300iN NTEP approved class II , FZ300i (internal calibration) or the FX300iWP water resistant version for less money than the Ohaus AV313. AND Weighing delivers lightening fast weighing results, 320 grams weighing capacity with 1 milligram readability and all topped off with a 5 year limited manufacturer warranty.

Looking for a balance that comes standard with a USB interface? Be sure to see the new Sartorius Practum 313-1S, Quintix 313-1S milligram balance. or the advanced Secura 313-1S for pharma applications. These Sartorius models feature a touch screen user interface for easy balance configuration.

US government customers call us saying the must comply with the Buy American Act clause the only similar balances we offer to the AV313 that are made in America would be the Scientech ZSP350. FAR Part 25.003 requirements state that domestic end products are preferred over foreign end products, and the Ohaus Adventurer is not made in the USA.

Ohaus AV313 formulation scale

print  |  
Brand Model Capacity Readability
Ohaus AV313 formulation scale 310 g 0.001 g
Add. Features
  • Carats
  • Grains
  • Milligrams
  • Ounces
  • Pennyweight
  • Grams
  • Parts Counting
  • RS-232c
Comparable Scales

A&D Weighing GX-400 milligram scale - $1871.00

Ohaus AX223 Internal Calibration - $1533.40

Ohaus AX423/E Milligram Balance - $1552.95

Sartorius Quintix 313-1S balance - $1427.94

A&D Weighing GF-300 Digital Scale - $1197.00

Sartorius ENTRIS 423-1S chemistry balance - $839.93

Sartorius Practum 213-1S milligram balance - $912.93

Scientech ZSP150 Milligram Scale - $1025.00

A&D Weighing GF-200P Pharmacy Balance - $1066.00

Scientech ZSP250 MG Balance - $1099.00

Scientech ZSP150NJ Mg Balance - $1199.00

Scientech ZSP400NP Pharmacy Balance - $1544.00

Scientech ZSP400NJ Milligram Scale - $1544.00

Sartorius Quintix 213-1S milligram scale - $1333.82

Ohaus Pioneer PA323 Milligram Balance - $1028.50

A&D Weighing FX700CT Milligram Balance - $999.97

A&D Weighing FX300iWP washdown scale - $1252.50

A&D Weighing FZ300i motorized calibration - $977.25

A&D Weighing FZ3000i built in calibration - $977.25

A&D Weighing FZ300iWP Internal Calibration Scale - $1548.75
MSRP: $1680.00
YOU PAY $1428.00
Pro Milligram Balance
milligram electronic balance

OHAUS AV313 Adventurer Pro Milligram Formulation Scale
PWB Discount Price $1428.00
Before you make your final selection be sure to see the Sartorius ENTRIS323-1S since we have special promotional pricing on the Entris323-1S allowing you to buy it for less than the AV313. If you need greater weighing capacity be sure to review Sartorius ENTRIS423-1S or ENTRIS623-1S
S&H via UPS ground $30.00
Capacity x Readability 310 g x 0.001 g
(std deviation)
0.001 g
Linearity ± 0.002 g
Weighing units Milligram, gram, ounce, user programmable custom unit, carat, troy ounce, pennyweight, grain, Newton, Hong Kong tael, Singapore tael, Taiwan tael, momme, tical, baht, mesghal, tola
Application Modes basic weighing, animal/dynamic weighing, parts counting with automatic sample recalibration, percent weighing, checkweighing, totalization, display hold
Tare range To capacity by subtraction
Stabilization time 3 seconds
Operating temperature 50° to 86° F / 10° to 30° C
RH less than 85%
Power requirements AC Adapter Only
Span Calibration Optional 200g ASTM 1 external weight
Display type 2-line alphanumeric brilliant backlit LCD display with text prompts
Display (in/cm) 4" x 1"/ 10 x 2.5 cm
Pan size (in/cm) 4.7" Ø / 12 cm Ø
Dimensions WxHXD (with draft shield) 8.7" x 7.5" x 11.8" inches
22 x 19 x 30 cm
Other Standard Features and Equipment

AC Adapter, RS-232 interface, In-use cover, Integral security bracket, Weigh below hook.  Additional features include stability indicator, mechanical and software overload/underload protection, low battery indicator, user selectable span calibration points, software reset menu

Optional Accessories

Security device, External calibration mass, Internal motorized and Density Determination Kit.  (Note: optional USB interface and a second RS-232 is available)

Weigh Sensor
Place of Origin
Net Weight 7.3 lb / 3.3 kg
Shipping dimensions 15.5" x 16" x 19.5" inches
39 x 41 x 50 cm
Shipping Weight 13.7 lb / 6.2 kg
Warranty 24 months limited manufacturer warranty.
Warranty return to base - repair facility is in New Jersey
ohaus balances Data Sheet ohaus lab balances Download the brochure loaded with tons of information.
ohaus scale User Manual ohaus manual Download the user manual.  If you have a question how it works it is in the manual.

ohaus balance
Measurements shown in millimeters.  Divide by 25.4 to convert to inches.
Height from weighing pan to top of of draftshield 4.5 inches.

ohaus adventurer scale SmarText™ Software Guides Users Through Balance Use SmarText™ is Ohausí easy to use balance software that utilizes text prompts to guide users through application use and balance setup.

Ohaus Adventurer Pro Analytical 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

Upgrade with factory install internal calibration AV313C $270.00
Upgrade Legal for Trade version AV313CN $300.00
Universal Specific Gravity Kit $139.95
Ohaus Density Determination Kit for 0.1/1mg balances $507.00
Lock Down Security Device $127.00
RS-232 Cable, IBM 9 pin $147.00
RS-232 Cable, IBM 25 pin $147.00
WinWedge Std Software Wedge for Windows $349.00
Granite Isolator 13 x 15 inch $569.00
Ohaus 80251992 Thermal Printer $575.00
SF40A Printer Impact $750.00

AD-1683 - Static Eliminator $1095.00

   calibration weights mass set traceable weight weights

Optional Calibration weight and weight sets.

100g ASTM Class 1 (± 0.25 mg) with NVLAP Cert $139.00
100g ASTM Class 1 (± 0.25 mg) with NVLAP Cert $139.00
200g ASTM Class 1 (± 0.50mg) with NVLAP Cert $235.00
1mg-100g 21 Piece Class 1 Weight Set with NVLAP Cert $1955.00
9 pc. Weight Set (100 g - 1 g) Class 1 with NVLAP $1042.00
Cal-Paks 50g, 5g, and 200mg Class 1 with NVLAP $281.00
Cal-Paks 100g, 10g, and 200mg Class 1 with NVLAP $337.00
Cal-Paks 100g, 10g, 2g Class 1 with NVLAP $355.00
Cal-Paks 200g, 20g, 2g Class 1 with NVLAP $372.00
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

QuadraStance™ Design Provides Superior Footprint Stability To enhance weighing stability, QuadraStance incorporates four feet to provide superior footprint stability on any surface. ohaus adventurer balance
Flexibility of Available Options
Ensure weighing accuracy with InCal™ internal calibration.  A factory installed USB or second RS232 interface allows connection to multiple peripherals.

The Ohaus Adventurer™ Pro – The Most Complete Balance in Its Class!

Since its introduction, the Ohaus Adventurer™ Pro has established itself as the industry’s most versatile balance.  It counts, it sums, it holds and it delivers traceable results.  Now, Ohaus take versatility to the next level by expanding the Adventurer Pro line to include a full range of Analytical and High Precision models.  No other balance in its class offers all these features in a compact design.  Notable features include:

Selectable Environmental Settings
Three filter modes and adjustable zero tracking are ideal for working in slow filling applications where sensitivity is a must.  When working in harsh environments, user can adjust balance settings to compensate for vibrations and other disturbances

Ohaus Adventurer digital scale
Multiple Application Modes Including:

Animal Weighing Mode - This mode allows the user to weigh small animals and filters out animal movements to provide a stable weight indication

Parts Counting with Optimization - This mode allows the user to count based on a calculated piece weight.  With optimization, counting accuracy is improved through auto re-calculation of the piece weight

Percentage Mode - This mode allows the user to display the weight of a sample as a percentage of a reference weight

Check Weighing Mode – This mode allows the user to check the weight of a sample against a preset target

Totalization Mode – This mode allows the user to sum a series of sample weights

Display Hold Mode – This mode allows the user to hold the highest stable weight on the display until cleared

Multiple weighing units - Including a user-defined custom unit for use in unique weighing applications

RS232 Interface with GLP Data Output - Connect to a PC or a printer and record GLP/GMP data including date, time, balance ID, user ID, project ID and reference data to meet traceability and compliance requirements

Battery or AC Power - Some models offer portability and can operate on either the included AC adapter, or on 4 “AA” batteries.  An Auto Shutoff feature helps conserve battery life

Easy to View Display - Adventurer Pro features a 2- line alphanumeric LCD with brilliant backlight.  Portable models include a backlight auto-off feature to conserve battery life

Easy to Use Keypad - Four-button keypad with dedicated YES, NO, BACK and EXIT functions simplify menu navigation and balance set-up

Finally, the feature rich Adventurer Pro is built with a large stainless steel weighing platform, mechanical and software overload/underload protection, an integrated security bracket, weigh below hook and has a standard protective in-use cover.  Software features include a stability indicator, a low battery indicator, user selectable span calibration points, auto tare, user selectable printing options, user selectable communications settings, user selectable data print options, user definable project & user ID’s, a software reset menu and a software lockout menu.

Select from 14 different Adventurer Pro Precision Balances

Cap x Read (g)

Pan Size Power Your Price

65 x 0.0001

3.5" Ø AC Only $2004.30

110 x 0.0001

3.5" Ø AC Only $2309.45

260 x 0.0001

3.5" Ø AC Only $2744.65

51 x 0.001

3.9" Ø AC/Battery $910.35

210 x 0.001

4.7" Ø AC Only $1294.55

310 x 0.001

4.7" Ø AC Only $1428.00

210 x 0.01

4.7" Ø AC/Battery $794.75

410 x 0.01

5.8" x 6.3" AC/Battery $884.00

810 x 0.01

5.8" x 6.3" AC/Battery $1004.70

2100 x 0.01

6.6" x 7.1" AC Only $1272.45

3100 x 0.01

6.6" x 7.1" AC Only $1445.85

2100 x 0.1

5.8" x 6.3" AC/Battery $794.75

4100 x 0.1

5.8" x 6.3" AC/Battery $870.40

8100 x 0.1

5.8" x 6.3" AC/Battery $981.75

In the video below we offer an overview of the components of the Entris milligram balance and how to assemble. Calibration is simple using an optional external calibration mass. We demonstrate the fast response time, repeatable weighing results and features like the leveling bubble, adjustable feet, RS-232 interface and more.
In the video below we offer a general overview of the Sartorius Entris precision lab balance. We highlight the features, functions and operation of the Sartorius Entris precision balance. See some of the available accessories for the Sartorius Entris like the optional data printer, RS232 cable, calibration weights and weighing below hook.
In the video below review the Sartorius Secura balance featuring a high quality capacitive touchscreen panel offering intuitive configuration and operation.
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