Saline Salt for Sinus Rinsing (30x 2.7gr.) $7 Saline Salt for Sinus Rinsing This medical grade saline salt powder from Sinuspulse is specifically measured for the 300ml sinus and nasal rinsing bottle. Each sachet is 2.7 gram, and you can simply use a single sachet to refill your nasal rinsing solution. High quality, light, and convenient! Each box contains 30 sachets specifically for the 300ml bottles.