Gizmo Engineering DLK-5 Low Level Drum Alarm, for 5 Gallon Drum

Features:

• Warns of empty drums with a bright flashing LED and a loud beeper when liquid level is low.
• It can go anywhere because its battery powered. No need for power outlets.
• Uninterruptible battery power lasts for years. Lithium battery included.
• Loud warbling tone cuts through the loudest industrial noise.
• Rugged. Built for rough, wet and corrosive environments.
• Protects your pumps from debris with an intake screen.
• Adjustable depth using a thumbscrew.
• No metal parts to corrode.
• Has no liquid suction pipe
• Removable screen built into the suction pipe guards your pumps from debris or crystals.
• Slip-on cap for fast drum transfers.
• 3/4" NPT Mounting Type.
• Polypropylene / PTFE Material.
• For 5 Gallon Drum.

Chemical Resistance:

• Aqueous Ammonia (conc.)
• Aqueous solutions to 100°C
• Hydrochloric acid (conc.)
• Nitric acid (30%)
• Oils (including waste oils)
• Potassium carbonate (40%)
• Sodium hydroxide (50%)
• Sulfuric acid 70%
• Sodium Hypochlorite

Adjusting the depth to the bottom of a drum makes sure the maximum all the chemical is extracted from your drums and the float switch leaves only a couple of millimeters of residue.