Good Morning All
We are buying new Moh's Hardness Kits. These kits no longer have a square plate in them. What is used as a substitute?
What other items of known hardness do you use for scratching? A fingernail has hardness of 2.5 and a steel blade of a knife has hardness of 5.5.
Thanks in advance,
Rita
Moh's Hardness Test
- MissKat
- Posts: 86
- Joined: 24 Apr 2015, 11:41
- Job Title: Science Technician
- School: Cranbrook School
- Suburb: Bellevue Hill
- State/Location: NSW
Re: Moh's Hardness Test
Is that like the back of a tile? That's what we use.
For hardness testing we use: fingernail, nail, steel blade, glass microscope slide, sandpaper/nail file, copper coin
For hardness testing we use: fingernail, nail, steel blade, glass microscope slide, sandpaper/nail file, copper coin
Re: Moh's Hardness Test
Thanks for those items for scratching. I will organise some for next year.
What we used was like a smooth small tile. I finally found some at Serrata. 'White streak plates' is what they are called and they come in pack of 10. Different coloured streaks show when different items scratch the plate.
What we used was like a smooth small tile. I finally found some at Serrata. 'White streak plates' is what they are called and they come in pack of 10. Different coloured streaks show when different items scratch the plate.