Coal quality analysis accessories:

1: Specialized smokeless coal

2: Standard coal sample

3: Benzoic acid

4: Porcelain boat

5: Shi Yingzhou

6: Crucible clamp

7: Crucible

8: Grey dish

9: Stainless steel crucible

10: Silicon carbon tube

11: Reducing tube

12: Thermocouple

13: Electrolytic cell

14: Ignition wire

15: Oxygenation device

16: Oxygen bomb

17: Silicon carbide rod

18: Crucible holder