Chandi ki shuddhta aur hallmark: 999, 925 aur 800 ka matlab
Chandi ke sikke, payal, bartan aur pooja ke saamaan har ghar mein hote hain. Par chandi kitni shuddh hai, ye aksar pata nahi hota. Sone ki tarah chandi ki shuddhta bhi number mein batayi jaati hai.
Chandi ke grade
| Grade | Shuddh chandi | Aam upyog |
|---|---|---|
| 999 | 99.9% | Sikke, bar |
| 990 / 970 | 99% / 97% | Kuch bartan aur murti |
| 925 | 92.5% (sterling) | Jewellery, payal, anguthi |
| 900 / 835 / 800 | 90% / 83.5% / 80% | Kuch bartan, purane saamaan |
BIS ne chandi ke liye bhi shuddhta ke grade tay kiye hain. Chandi par hallmark dekhne ko milta hai, par sone ki tarah har chandi ke saamaan par ye zaroori nahi hai. Isliye bill par shuddhta zaroor likhwayein.
Daam par asar
925 chandi mein 7.5% doosri dhaatu (aksar tamba) hoti hai, isliye uska metal daam 999 se kam hota hai. Payal aur bartan par making alag lagta hai. Live: aaj ka chandi rate · payal ka daam.
Nakli ya kam shuddh chandi se kaise bachein
- Bill par grade (999/925) aur wazan likhwayein.
- Bahut sasta offer ho to shaq karein; "German silver" mein asli chandi lagbhag nahi hoti.
- Chandi par chumbak (magnet) nahi chipakta; chipke to shuddh nahi. Par na chipakna shuddhta ka saboot nahi.
- Bade saamaan ke liye XRF jaanch karwa sakte hain.
Chandi kaali kyon padti hai?
Hawa ke sulphur se chandi par kaali parat aati hai. Ye nuksaan nahi hai. Halke sabun-paani se ya chandi saaf karne wale kapde se saaf karein. Air-tight dibbe mein rakhne se kaalapan kam aata hai.
Chandi mein nivesh: coin, bar ya bartan.