Standard No.:	YY 0623-2008
English Name:	Test method of soluble fluoride of dental materials
Chinese Name:	牙科材料可溶出氟的测定方法
Chinese Classification:	C33    Stomatologic device, equipment and material
Professional Classification:	YY    Professional Standard - Pharmaceutics
Source Content Issued by:	China Food and Drug Administration
Issued on:	2008-04-25
Implemented on:	2009-12-1
Status:	valid
Superseded by:	强制性推荐性标准
Target Language:	English
File Format:	PDF
Word Count:	2000 words
Translation Price(USD):	40.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the test method of soluble fluoride of dental materials. The soluble fluoride in this standard includes fluoride released by materials directly dissolving in water and fluoride dissolved in water after different treatment methods on the materials. This standard is applicable to determination of soluble fluoride content in materials for dental repair, adhesion and prevention and healthcare. 2 Method 2.1 Apparatus 2.1.1 Acidometer (potentiometer) 2.1.2 Composite fluoride electrode 2.1.3 Electronic balance (0.0001 g). 2.2 Reagents 2.2.1 Sodium fluoride: guaranteed reagent or analytical reagent. 2.2.2 Cyclohexanediaminetetraacetic acid(CDTA): analytical reagent. 2.2.3 Sodium chloride: analytical reagent. 2.2.4 Glacial acetic acid: analytical reagent. 2.2.5 6 mol/L sodium hydroxide. 2.2.6 5 mol/L hydrochloric acid. 2.2.7 10% sodium carbonate. 2.2.8 Water: test water shall meet the specification of Grade 3 water in GB 6682. 2.3 Testing environment

Foreword i Introduction ii 1 Scope 2 Method Reference