Pipette Tip Bend Test

A pipette (also spelled pipet or pipettor) is used to aspirate and dispense fluids in wells for analysis and further testing.  There are many types of piston pipettes, but all work on essentially the same principle; hand or mechanical pressure on a piston or plunger working over a fixed length in a cylinder forces a pre-determined volume of liquid out of the orifice of the pipette.  Pipettes are used to hold body fluids, oily fluids, concentrated acids, nucleic acids, and volatile compounds.

The floating roller peel test is one of many types of tests designed to measure the average peel force of an adhesive or other bonding agent.  The other common peel tests are the 90 degree, 180 degree, and T-Peel.  Although not suitable for every application, the floating roller is a very accurate and easy method to obtain average peel force values.

This is a summary and how to guide for ASTM F543 Standard Specification and Test Methods for Metallic Bone Screws.

For over twenty years, ADMET has been designing state of the art testing systems for a range of industries. From plastics and adhesives to ceramic and metals, ADMET has established itself as a standard bearer in the world of material and device testing.

Bone screws are designed to be inserted into bone or bone-like material to stabilize the area. The screws are subjected to different loads as the body moves and as the bones heal. This standard specification is used to determine how much force is required to cause a failure, either a break or removal, from the bone material. This method is used to compare uniformity of different screws.

Small titanium, plastic, ceramic, and composite parts are crucial to the assembly of medical devices, medical parts for orthopedics, and dental devices. Many ASTM and ISO standards outline the test procedures and sample preparation. There are many references on the ADMET blog site. 

 Why is this important? Companies and Universities spend R & D dollars testing various adhesives to determine which one will adhere to skin, but not be painful to remove.

Dental composite resins are types of synthetic resins which are used in dentistry as restorative material or adhesives. Synthetic resins evolved as restorative materials since they were insoluble, aesthetic, insensitive to dehydration, easy to manipulate and reasonably inexpensive. Many dentists today use resin fillings instead of amalgam fillings. Composite resins are also used for reshaping teeth, partial crowns, and to adhere retainers.

Dental materials ranging from composite resin fillings, to porcelain to metal crowns and bridges, to alginate impression material, to dental adhesives for bonding and restorative dentistry are all tested for their mechanical property strengths. ISO 6872, ISO11405, ISO14801, ISO 9917, and other standards specify the requirements and the corresponding test methods to access dental materials. 

Choosing the right testing machine can help lower costs and accelerate product development. Whether company is buying its first testing system or is looking for a different type of system to perform tests on a new product, purchasing a testing system is an important decision. We’ve put together 10 easy steps to help you select the perfect system for your testing application.