Creating a Table of Specifications (aka “Test Blueprint”)
It can be difficult to decide what questions to include on the final exam of a certificate course. A common approach is to comb through […]
testing
ASTM E691-22: Interlaboratory Study to Determine Test Method Precision
ASTM E691-22: Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method features techniques for planning, conducting, analyzing, and treating […]
Item and Form Analysis
Every certificate program accredited by ANAB has a summative (i.e., final) assessment following the course to determine whether learners have met the course learning objectives. […]
IEC Extended Version (EXV)
Extended versions (EXVs) of International Electrotechnical Commission (IEC) standards provide comprehensive content and the reference document of an IEC standard into one easy-to-use document, making […]
What is ISO 17043?
Laboratory errors have a reported frequency of 0.012–0.6 % of all test results. This is why proficiency testing (PT), a formal type of interlaboratory comparisons, is an […]
ASTM F2077-22: Intervertebral Body Fusion Devices
You are taller in the morning and in outer space. The lack of gravity from lying down to sleep or being in outer space causes […]
ANSI/ASHRAE 72-2022: Testing Refrigerators And Freezers
Can you imagine a world without refrigerators? It seems unlikely, as 99.8% of American homes own at least one refrigerator. ANSI/ASHRAE 72-2022: Method Of Testing […]
ASTM E18-22: Rockwell Hardness Standard Test Methods
Hardness often is attached to a multitude of definitions, including resistance to local penetration, scratching, and abrasion, yet it is not quite a fundamental property […]
Nondestructive Testing (NDT) in ASTM E1316-22
Nondestructive testing (NDT) and examination can refer to several different tasks and procedures for testing materials without damaging them. According to ASTM E1316-22: Standard Terminology […]
ANSI Z97.1 & Safety Glazing Material Markings
For a change, look at glass (or plastic), not through it. In small lettering, you might see some letters and numbers. Markings like “ANSI Z97.1-2015” […]