Breaking Loose and Glide Force Testing
—— USP 382 and ISO 7886-1
Vigtigheden af brud løs og glidekrafttest
Break loose and glide force testing is a critical process in the quality control of packaging and medical devices, particularly in syringes. This test measures the force required to initiate movement (break loose force) and maintain movement (glide force) as the syringe plunger is engaged. The importance of these tests lies in their role in ensuring smooth operation, safety, and performance, especially in pharmaceutical and medical applications where precision is essential.
Testing for break loose and glide forces guarantees that syringes perform consistently under various conditions. By adhering to the industry standard USP 382, manufacturers can ensure that their products meet the necessary specifications for use in medical and pharmaceutical applications.
Break Loose Force vs. Glide Force
It’s important to distinguish between break loose force and glide force, as both have distinct implications for syringe performance:
- Break Loose Force: The initial force required to break the seal between the plunger and the barrel. This force ensures that the syringe will not leak or malfunction when first used.
- Glide Force: The continuous force required to keep the plunger moving after the initial break loose. It ensures the syringe delivers medication smoothly without sudden jerks or inconsistent flow.
Both forces are measured separately but are essential for understanding the overall performance of the syringe. Proper calibration of both forces guarantees smooth and reliable use.
Standards for Syringe Force Testing
USP 382 og ISO 7886-1 er nøglestandarder, der skitserer kravene til test af sprøjtestempelkraft. Disse standarder sikrer, at sprøjter opfylder høje ydelses- og sikkerhedskriterier. USP 382 fokuserer på de funktionelle krav til sprøjter, mens ISO 7886-1 Annex E specificerer testmetoderne til bestemmelse af de kræfter, der kræves for at betjene sprøjtestemplet, inklusive trykstemplets krafttest.
USP 382 syringe glide force testing
- Objektiv: Sikre sprøjtens funktionalitet og sikkerhed.
- Parametre: Indledende kraft, maksimal kraft, vedvarende kraft.
- Betydning: Overholdelse garanterer pålidelig sprøjteydelse i kliniske omgivelser.
ISO 7886-1 syringe glide force testing Annex E
- Objektiv: Mål den kraft, der kræves for at flytte stemplet gennem sprøjtecylinderen med en kontrolleret hastighed.
- Procedure: Placer sprøjten i testeren og flyt stemplet med en forudbestemt hastighed.
- Parametre: Indledende, maksimale og vedvarende kræfter måles og sammenlignes med standardgrænser.
- Betydning: Sikrer, at sprøjter opfylder kraftkrav, afgørende for sikkerhed og funktionalitet.
How to Measure Break Loose Glide Force
- Forberedelse: The syringe is secured in a testing machine, and the plunger is positioned for the test.
- Break Loose Force Measurement: The initial force required to break the plunger’s seal is measured. This is known as the “break loose force” or the force needed to start the plunger’s movement.
- Glide Force Measurement: After the plunger moves, the test measures the continuous force required to keep it moving smoothly. This is called the “glide force.”
- Testing Conditions: The test is typically conducted under controlled environmental conditions, such as temperature, to ensure the results reflect real-world usage.
Test Equipment for Break Loose and Glide Force Testing
The Cell Instruments MST-01 Break Loose Glide Force Tester is designed to meet the rigorous demands of medical device testing. It provides precise measurements of the force required to push the plunger of a syringe, ensuring that each syringe meets the high standards of performance and safety required in medical and pharmaceutical applications.
Tekniske specifikationer for MST-01
Testområde | 50N (eller efter behov) |
Slagtilfælde | 200 mm (uden klemme) |
Test hastighed | 1~500 mm/min |
Forskydningsnøjagtighed | 0,01 mm |
Nøjagtighed | 0.5% FS |
Produktion | Skærm, mikroprinter, RS232 (valgfrit) |
Magt | 110~220V |
Nøglefunktioner og fordele
- Pålidelighed og præcision: Høj nøjagtighed og pålidelighed med PLC-styring.
- Brugervenlighed: Brugervenlig grænseflade til alle færdighedsniveauer.
- Holdbarhed: Bygget med materialer af høj kvalitet til langtidsbrug.
- Kundesupport: Omfattende support til installation, træning og vedligeholdelse.
FAQs about Break Loose and Glide Force Testing
A1: Afprøvning af løs kraft måler den kraft, der kræves for at starte bevægelsen af et sprøjtestempler inde i cylinderen.
A2: Glidekrafttest sikrer, at sprøjtestemplet bevæger sig jævnt uden overdreven kraft, hvilket er afgørende for nøjagtig og sikker medicinafgivelse.
A3: MST-01 måler den kraft, der er nødvendig for at skubbe sprøjtestemplet, og leverer data i realtid og analyse for at sikre, at sprøjter opfylder ydeevnestandarderne.
A4: USP 382 og ISO 7886-1 er nøglestandarderne, der skitserer kravene til test af sprøjtestemplets kraft.
A5: Ja, Cell Instruments tilbyder tilpasningsmuligheder for at tilpasse testeren til forskellige sprøjtestørrelser og integrere yderligere funktioner.