Canada Airline passenger rules allow small knives,ban bath salts and baby powder.

Airline passengers can carry small knives on flights, but bath salts and baby powder are now banned from carry-on luggage under revamped Transport Canada rules that take effect today.

Transport Minister Marc Garneau says changes effective today bring Canada in line with international standards.

Small knife blades measuring six centimetres or less, which is about the size of a large paper clip, will now be allowed.But knife blades of any length are still banned on flights to the United States through pre-clearance facilities, and razor blades and box cutters of any size are prohibited at screening checkpoints.

Changes to screening procedures are designed to ensure a safe and secure aviation system while easing travel for tourists and businesses, according to a news release from the department.

Other powders and granular material in containers that measure more than 350 millilitres, about the size of a pop can that will no longer be permitted in carry-on baggage include–Sea salt, Foot powder, Cooking powder and Sand.

Items will still be allowed on checked-in luggage. Baby formula, protein powder, tea and coffee will be allowed in carry-on luggage.