ASTM E898 Standard Test Method of Testing Top-Loading, Direct-Reading Laboratory Scales and Balances

    ASTM E898 Introduction

    ASTM E898 is designed to test top-loading laboratory scales that can measure the entire weight range up to their capacity without manual adjustment. ASTM E898 ensures that the entire reading range is on-scale, requiring no manipulation of weights, riders, or dials, except for some scales with optical reading devices, which may need the operation of a micrometer dial for interpolation of the final one or two significant figures. ASTM E898 covers the determination of characteristics of top-loading, direct-reading laboratory scales and balances, which can have capacities ranging from a few grams to several kilograms. ASTM E898 is applicable to any such instrument and measures the most important characteristics relevant to the user.

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    Get Certified ASTM E898 for Accurate and Reliable Weighing

    ASTM E898 certification illustrates that laboratory scales and balances are put through tests in the internationally recognized procedures. Certification guarantees the accuracy of weighing, helps in compliance with regulation and increases credibility in the laboratories of analysis, industry, and research.

    ASTM E898 Scope

    • Measures accuracy, repeatability, and sensitivity. 
    • Appropriate for mechanical and electronic balances.
    • Quality assurance and calibration checking in the laboratory. 
    • Provides a uniform level of weighing within operating ranges. 
    • Facilitates adherence to the laboratory accreditation standards.

    ASTM E898 Equipment and Sample Preparation

    Specimen DetailsTop-loading, direct-reading laboratory scales or balances
    Specimen PreparationClean weighing pan, level instrument, stable surface
    Specimen DimensionsAccording to manufacturer’s specifications

    ASTM E898 Use / Applications

    • Checking the performance of the laboratory balances. 
    • Quality analysis and testing laboratory. 
    • Pharmaceutical and chemical laboratory calibration tests. 
    • Laboratories of research and development. 
    • Weighing equipment validation in industries.

    ASTM E898 Technique, Process, and Data Collection

    In the ASTM E898 test, certified calibration weights are added uniformly throughout the balance weighing range. The results of readings are registered on every load, and the deviation of actual mass is computed. Repeat measurements are taken to determine consistency, and sensitivity is determined by noting the balance response to a minor change in mass. All the data is recorded to verify the performance.

    ASTM E898 Testing Procedure and Requirements

    Instrument InspectionInspect the balance for cleanliness, level, and proper installation.
    Warm-Up PeriodAllow electronic balances to stabilize as recommended by the manufacturer.
    Zero CheckVerify proper zero setting before testing.
    Accuracy TestApply certified test weights across the balance capacity and record readings.
    Repeatability TestWeigh the same test mass multiple times and evaluate consistency.

    ASTM E898 Results and Interpretation

    Comparison of measured values and certified test weights is considered to interpret results. Acceptable performance is calculated on the premise of permissible tolerances of accuracy, repeatability, and sensitivity. When the deviations are not within the limits, then it means that the balance requires recalibration, adjustment, or maintenance.

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    ASTM E898 Common Challenges and Troubleshooting

    The problems that are usually encountered are environmental vibration, air draught, temperature change, and inadequate levelling. Balance accuracy can be influenced by the following factors. Controlled laboratory conditions and regular calibration of the laboratory are used to reduce measurement errors.

    ASTM E898 Problem & Solution

    Problem: Inconsistent weighing results

    Solution: This needs to be fixed by maintaining the required balance levelling, control of the environment, routine calibration, and compliance with the ASTM E898 testing process.

    Direct-reading balances and automated ones enable the rapid testing and verification process without a reduction in accuracy.

    Expert

    The trained technicians also confirm that there is correct handling of calibration weights, proper testing, and correct interpretation of balance performance.

    Cost

    ASTM E898 testing is economical and assists in avoiding expensive mistakes, re-work, and non -conformance due to a good balance check.

    FAQ

    Where can I get the astm e898 tested?
    You can share your astm e898 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific astm e898 test to various testing techniques.
    Please contact us for a detailed quote for your astm e898 testing needs. Cost incurred to carry out different astm e898 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
    The required number of samples or specimens should comply with the procedure given in the astm e898 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
    MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
    The turnaround time for astm e898 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
    Gokula Srinivasan Selvam
    About Author
    Gokula Srinivasan Selvam
    Gokula Srinivasan Selvam is a Material Testing Associate at MaTestLab Inc. and holds a postgraduate degree in Ceramic Engineering from IIT (BHU), Varanasi.
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