STN ISO 720
| Name: | STN ISO 720 |
| Validity: | Withdrawn |
| Number of pages: | 12 |
| Language: |
CS
|
| Paper: | 9,70€ |
| Electronic version |
a) Only read (without ability to print and copy)
8,73€ b) Without ability to print, with ability to copy (printscreen) 9,70€ c) With ability to print and copy (printscreen) 12,61€ |
| Slovak title | Sklo. Odolnosť sklenej drviny proti vode pri 121 °C. Metóda skúšania a rozdelenia do tried |
| English title | Glass. Hydrolytic resistance of glass grains at 121 °C. Method of test and classification |
| Release Date: | 01. 10. 1992 |
| Date of withdrawal: | 01. 08. 2022 |
| ICS: | 19.020, 81.040.10 |
| Sorting character/National clasification code | 70 0530 |
| Level of incorporation: | obs ISO 720:1985 |
| Official Journal | 10/92 |
| Amendments | |
| Replaced by: | |
| Repleces: | STN 70 0530:1981-12 |
| Note in Official Journal: | |
| Subject of the standard: | Tato norma urcuje: a) metodu stanoveni odolnosti sklenene drti proti vode pri 121 |grad| C. Odolnost se meri a vyjadruje objemem kyseliny potrebne pro titraci vylouzenych alkalii z jednotkove hmotnosti skla a muze se vyjadrit take jako mnozstvi oxidu sodneho, odpovidajici objemu teto kyseliny; b)rozdeleni skla do trid podle odolnosti proti vode stanovene zkouskou podle teto mezinarodni normy. Tato norma je urcena k pouziti pro odolnejsi typy skla. Pro mene odolna skla se prednostne pouzije metoda podle ISO 719. |