Active Eye Lighted Loupe 30x | LED, Batteries and Case Included

What a 30x Lighted Loupe Shows That the Eye Cannot

Thirty times is the magnification where leaf surface detail stops being guesswork. Two-spotted mite adults measure around half a millimetre, and their eggs are smaller again. At this power both are plainly visible, along with the cast skins and webbing that show an infestation is established rather than arriving. Thrip larvae, aphid colonies on a growing tip and the first powdery mildew colonies all resolve at the same setting. Trichome heads on a flowering plant resolve too, which is how most growers end up using one. The built-in LED matters more than the glass does. Leaf undersides are where mites live and where no ambient light reaches. A hand lens held under a leaf puts your own head between that leaf and the room. An integrated light removes that problem entirely. The housing measures 2.8 by 1.3 by 2.8 in and the shipping weight is 0.14 lb. Batteries are in the box and so is a hard case. A trilingual colour chart doubles as a quick reference for what you are looking at.

Using It Well, and Where a Magnifying Glass Falls Short

Depth of field at this power is very shallow, which is the single thing that frustrates first-time users. Rest the barrel directly on the leaf rather than holding it above the surface. That fixes the working distance and puts the plane of focus where the glass expects it. Bring the leaf to the loupe and not the other way around, because a hand-held leaf moves less than a hand-held lens does. Support the leaf from underneath with one finger. A conventional magnifier at three or five times will find damage but not the animal causing it. By the time that damage is visible the population has been building for a fortnight. That gap is the argument for carrying this instead. Scout the same plants on the same day each week, and always check undersides and the newest growth first. Those are where a problem starts. Keep the lens clean, since resin from a flowering plant transfers onto the glass quickly and a smeared lens reads as a blurry specimen. The barcode on the pack is 638104009782.

Key Features

• Magnification: Thirty times, enough to resolve mite eggs and cast skins
• Illumination: An LED is built into the barrel rather than clipped on
• Body size: 2.8 by 1.3 by 2.8 in, small enough for a shirt pocket
• Weight: Around 0.14 lb shipped
• In the box: Batteries and a hard case are both included
• Reference: A trilingual colour chart and user guide come with it
• Technique: Rest the barrel on the leaf to fix the working distance
• Scouting: Check leaf undersides and the newest growth first
• Against a hand lens: Three or five times finds damage but not the pest

Technical Specifications