Analytical Balances and Scales for Laboratory
Analytical Balances from METTLER TOLEDO

Analytical Balances

Chính xác vượt trội

Làm cách nào để chúng tôi có thể hỗ trợ bạn?
Gọi để được báo giá

Analytical Balances
Excellence Level XPR Analytical Balance
Advanced Line MS-TS Analytical Balance
ME_T Standard Analytical Balances

Cân phân tích Excellence

Cân Phân Tích Advanced

Cân Phân Tích Standard

Cân XPE cung cấp hiệu suất cân tốt nhất và đáp ứng các yêu cầu cao nhất về độ an toàn, hiệu quả, đảm bảo chất lượng và dễ tuân thủ.
Khi bạn cần hiệu suất cân tuyệt vời và độ bền, cân Mettler Toledo cấp độ nâng cao là lựa chọn phù hợp. Thiết kế cân trực quan và các ứng dụng cân tích hợp giúp quá trình cân nhanh chóng và thuận tiện.
Thế giới cân kỹ thuật chuyên nghiệp sẽ không thiếu cân Satndard với tiêu chuẩn mạnh mẽ và dễ sử dụng. Xây dựng chất lượng cân cao và hiệu suất vững chắc đảm bảo kết quả cân chính xác và phù hợp.
Excellence Level XPR Analytical Balance

Cân XPE cung cấp hiệu suất cân tốt nhất và đáp ứng các yêu cầu cao nhất về độ an toàn, hiệu quả, đảm bảo chất lượng và dễ tuân thủ.

Advanced Line MS-TS Analytical Balance

Khi bạn cần hiệu suất cân tuyệt vời và độ bền, cân Mettler Toledo cấp độ nâng cao là lựa chọn phù hợp. Thiết kế cân trực quan và các ứng dụng cân tích hợp giúp quá trình cân nhanh chóng và thuận tiện.

ME_T Standard Analytical Balances

Thế giới cân kỹ thuật chuyên nghiệp sẽ không thiếu cân Satndard với tiêu chuẩn mạnh mẽ và dễ sử dụng. Xây dựng chất lượng cân cao và hiệu suất vững chắc đảm bảo kết quả cân chính xác và phù hợp.

Excellence Analytical Balances
Advanced Analytical Balances
Standard Analytical Balances
Weighing Accessories
Cân XPE cung cấp hiệu suất cân tốt nhất và đáp ứng các yêu cầu cao nhất về độ an toàn, hiệu quả, đảm bảo chất lượng và dễ tuân thủ.
Excellence Level XPR Analytical Balance
Khi bạn cần hiệu suất cân tuyệt vời và độ bền, cân Mettler Toledo cấp độ nâng cao là lựa chọn phù hợp. Thiết kế cân trực quan và các ứng dụng cân tích hợp giúp quá trình cân nhanh chóng và thuận tiện.
Advanced Line MS-TS Analytical Balance
Thế giới cân kỹ thuật chuyên nghiệp sẽ không thiếu cân Satndard với tiêu chuẩn mạnh mẽ và dễ sử dụng. Xây dựng chất lượng cân cao và hiệu suất vững chắc đảm bảo kết quả cân chính xác và phù hợp.
ME_T Standard Analytical Balances
Excellence Level XPR Analytical Balance

Cân XPE cung cấp hiệu suất cân tốt nhất và đáp ứng các yêu cầu cao nhất về độ an toàn, hiệu quả, đảm bảo chất lượng và dễ tuân thủ.

Advanced Line MS-TS Analytical Balance

Khi bạn cần hiệu suất cân tuyệt vời và độ bền, cân Mettler Toledo cấp độ nâng cao là lựa chọn phù hợp. Thiết kế cân trực quan và các ứng dụng cân tích hợp giúp quá trình cân nhanh chóng và thuận tiện.

ME_T Standard Analytical Balances

Thế giới cân kỹ thuật chuyên nghiệp sẽ không thiếu cân Satndard với tiêu chuẩn mạnh mẽ và dễ sử dụng. Xây dựng chất lượng cân cao và hiệu suất vững chắc đảm bảo kết quả cân chính xác và phù hợp.

Dịch vụ

Gọi để được báo giá

Explore our Services - Tailored to Fit your Equipment

We support and service your measurement equipment through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.

Nhanh chóng
Hỗ trợ và sửa chữa
Hiệu suất
Bảo dưỡng và Tối ưu hóa
Tuân thủ
Hiệu chỉnh và Chất lượng
Chuyên gia
Đào tạo và Tư vấn

Ấn phẩm

GWP®

Good Weighing Practice

FAQ

Analytical Balances

What is an analytical balance?

An analytical or semi analytical balance is a form of scale that measures mass to a high degree of precision.

It has a weighing capacity in the range of 54-520 g and a readability of 0.005 mg - 0.1 mg. Analytical balance sensitivity requires it to be protected by a draft shield or an enclosure.

METTLER TOLEDO XPR and XSR analytical balances are equipped with the SmartGrid weighing pan minimising air turbulence and therefore shorten stabilization times and allowing faster weighing results.

 
Analytical Balances - Applications - Pipette Calibration

Where are analytical balances used? What are the application areas of analytical balances?

An analytical balance scale, often called a "lab balance", permits quantitative analysis of a sample. Typical applications of an electronic analytical balance include:

  • Sample/standard preparation,
  • formulation,
  • differential weighing,
  • density determination,
  • interval weighing and
  • pipette routine testing.
 

How to weigh on an analytical balance?

To start a weighing operation, open the door and place a container on the pan using gloves or tweezers. Close the door and wait until the value stabilises, noting the weight. Clear the display by pressing the tare button until it reads 0.0000 g. Add the sample until the desired weight is reached. Close the door and again wait for stability - record the net weight. If the instrument is unplugged for cleaning, allow readjustment time before reuse.

METTLER TOLEDO’s analytical balances are designed for easy cleaning with draft shield disassembly in seconds, and dishwasher-safe panels. Cleaning Recommendations and Regulations for Balances

 

What is analytical balance uncertainty?

When making measurements there is always an element of uncertainty. An estimate of doubt that surrounds it (the uncertainty) is key to any measurement. This is determined by measuring the performance of the balance, properties of the weighing object and environmental surroundings. Determination of measurement uncertainty is an integral part of a balance calibration.

 

Why should I calibrate my analytical balance?

Analytical balance calibration ensures that weighing equipment is accurate and satisfies standards such as ISO, GLP/GMP, IFS, and BRC. Documented calibration procedures indicate the quality of measurements, and should be performed regularly throughout the balance’s lifetime.

Calibration should not be confused with adjustment of a balance, and must be repeated after adjustment/repairs. Read more on Calibration.

 

How should I calibrate my analytical balance?

The calibration of an analytical balance is performed by an authorized service technician following a standard procedure, using calibration software:

  1. Establish how well the instrument performs by testing the relationship between measurement standards and indications through calibration.
  2. Verify whether the instrument meets specific requirements with a Pass/Fail statement.
  3. If requirements are not met, adjust the instrument so that any deviation does not exceed tolerance limits.
  4. Re-calibrate the instrument to confirm compliance with specified tolerances.

In between calibration intervals, routine testing by the user can detect potential issues.

METTLER TOLEDO has developed a global scientific standard for the secure selection, calibration and operation of weighing equipment, GWP®, or Good Weighing Practice™.

 

Which tolerances apply to balance calibration?

Tolerances determine whether a balance or scale behaves "well enough" to meet a particular set of process requirements. Tolerances set the criteria to issue a Pass/Fail statement. Tolerances come from a variety of sources, including:

  • Legal tolerances:
    Legal tolerances stipulated by OIML R76 or NIST Handbook 44 (US only) assess legal for trade requirements. These tolerances are quite large and easily met with laboratory balances, or when weighing at the lower end of the measurement range.
  • Manufacturer tolerances:
    Manufacturer tolerances ensure that equipment meets manufacturer specifications. Manufacturer tolerances do not consider user specific process requirements, and are unsuitable for improving the weighing process.
  • Process tolerances:
    Specific process tolerances defined by the user, support process improvements and savings on material, waste and rework. For scales in a legal for trade application, process tolerances should therefore be applied in addition to legal tolerances.

Legal tolerances protect consumers but do not consider specific producer requirements. Optimising process tolerances that are applied to measuring instruments can have a large impact on process profitability.

 

What is the analytical balance minimum weight?

Every analytical balance minimum weight is different, depending on the performance of the load cell, its location, and ambient conditions. The minimum weight is the accuracy limit of the instrument, below this minimum weight, the relative measurement uncertainty (absolute measurement uncertainty divided by the load, usually indicated in %) is larger than the required weighing accuracy, and the weighing result cannot be trusted.

In order to determine the minimum weight for a balance, measurement uncertainty needs to be assessed in the working environment. Alternatively repeatability, as the dominant source of error in the lower balance range, can be assessed to determine the minimum weight, carried out using a small weight, below 5% of balance capacity.

The MinWeigh function of METTLER TOLEDO analytical balances, installed by a certified technician, monitors the minimum sample weight of the balance. If a weighing is below the determined acceptable minimum value, the balance display turns red.

 

Analytical balance accuracy and precision – what is the difference and how to test them?

Precision refers to the closeness of two or more measurements to each other. Accuracy refers to the closeness of a measured value to a known value, and is based on readability, repeatability, non-linearity and eccentricity. Accuracy can be tested using

  • An external reference weight with a known mass (traceable calibrated weight)
  • Automatic internal adjustment using a reference mass built into the balance
  • Accuracy can only be determined by testing of the instrument at its location of use.

View Laboratory Balances Tutorial - Basics and Weighing Influences course on good weighing practice.

 

What are the effects of static electricity on an analytical balance and how to eliminate static charges?

Electrostatic charges can cause unstable, non-repeatable weighing results. Static electricity exerts a force on the weighing pan, which directly affects analytical balance results. Precautions to reduce these effects include:

  • Ensure adequate air humidity (≥ 45%...50%)
  • If possible, use antistatic weighing containers (metal is ideal)
  • Avoid rubbing containers
  • If the sample is small enough, use a metal dish with an edge to help shield the electric fields

To ensure analytical balance static elimination, discharge the sample and container with an ionizer before weighing.

Read additional information on electrostatic charges and the physics behind it.  

 
Thank you for visiting www.mt.com. We have tried to optimize your experience while on the site, but we noticed that you are using an older version of a web browser. We would like to let you know that some features on the site may not be available or may not work as nicely as they would on a newer browser version. If you would like to take full advantage of the site, please update your web browser to help improve your experience while browsing www.mt.com.