eFill E-100 Trigger Spray Bottle 750ml capacity durable HD polyethylene and has calibration markings for easy chemical dilution.'Pistol-grip' 3 finger trigger with adjustable spray pattern from a fine spray to jet. Locking nozzle (leakproof). eFill User Guide Step 1: Gently squeeze bottle, pushing liquid up 'spout' and into dosing reservoir. Step 2: Stop squeezing once reservoir is full - excess chemical will drain back into 'spout'. Step 3: Carefully pour the contents of the reservoir into the trigger bottle. Remember to replace cap on concentrate bottle immediately afterwards. Step 4: Insert spray head back onto bottle and secure and tighten. Trigger Bottle Applications If you are using a bucket application, please follow steps 1 and 2 above. Then ensure bucket is full with fresh, clean water. Then, pour contents of dosing reservoir into the bucket. Make sure the bottle is close to the waters surface and tip gently to avoid chemical splashes. Lar