category ii iii general surgical , medicals items : , calibration kit for nox boxi includes (a) calibration gas 25ppm no in n2 (consumable) (b) calibration gas- 10ppm no2 in air (consumable) , single use delivery and sampling kit for 10 mm circuits(consumable) (hsn code-90192000) , replacement water trap for noxboxi-(consumable accessory ) (hsn code -90192000) , water trap drainage syringe (consumable accessory) , replacement nation tubing for nox boxi (consumable accessory ) (hsn code:90330010.00) , replacement battery for noxboxi (consumable accessory) (hsn code:85065010) , replacement o2 sensor for noxboxi (consumable accessory) , replacement no2 sensor for noxboxi (consumable accessory) , replacement no sensor for noxboxi (consumable accessory)