The Big Chief’s 1g White Widow cart is a hefty 78% THC, making it a strong contender for daily smokers. This Big Chief strain is easy on the throat and lungs, offering a strong head and body high. A 1000 mg cartridge is usually rated to last for around 300 seconds – or five minutes – of inhalation time. That’s a lot of time. But these are big cartridges. Working out how long 300 seconds of inhalation will last isn’t too hard. If you’re sticking to puffs under three seconds, most 0.5-gram carts will last between 80 and 160 puffs. A typical 1-gram oil cart should keep going twice as long—for 160 to 320 puffs. Based on these numbers, a weed cart can last for as little as a week or two with frequent use.