Would these be good to use on glass to find out if its Vaseline Glass

Your best bet would be to use a ShortWave UV light, as it would show the green flouressence stronger. However, for portability this Long Wave UV should give you enough fluorescence from the trace uranium (3 to 27%) present in 1930 era glassware, providing very little ambient light is present during the test and the UV flashlight is healed near enough to the glass surface, you should see a faint enough green trace to the outside edge. A test with this light should be performed in various lighting conditions beforehand on several types of real vintage Vaseline so you'll know what to look for in seeking your treasures.

do you have to click several times to cycle through modes?

It only has 1mode. Very easy to use. We actually used them for our nighttime easter egg hunt.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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2 Packs Black Light Flashlight, 12LED 395nm UV Handheld Black Light Mini Flashlight, Dogs Urine Detector for Dry Urine Stains, Bed Bugs, Scorpions

Product ID: 540815938

Details

Battery Cell Composition
Alkaline
Color
Black
Light Source Type
UV
Material
Aluminum
Power Source
Battery

🐾395nm wavelength for pet urine detection

💧Water-resistant aluminum body

🔦12 powerful UV LEDs

Description

🔦 Illuminate the unseen, own the clean scene!

DOUBLE THE VALUE - Two flashlights in one pack—share with friends or keep one for every adventure.
COMPACT POWERHOUSE - Mini handheld design fits your lifestyle—perfect for travel, home, or on-the-go inspections.
DURABLE SLIP RESISTANT - Rugged aluminum alloy with knurled grip ensures long-lasting use and secure handling.
MULTI PURPOSE UV DETECTION - Detect bed bugs, scorpions, currency authenticity, and resin cures effortlessly.
SPOT INVISIBLE STAINS INSTANTLY - 395nm UV light reveals hidden pet urine, food stains, and spills with precision.

The ESCO LITE 2-Pack Black Light Flashlights feature 12 UV LEDs at 395nm wavelength, ideal for detecting pet urine, bed bugs, and more. Crafted from water-resistant aluminum with a textured grip, these compact, rechargeable handheld devices are perfect for home, travel, and professional use. Each pack includes two durable flashlights powered by 3 AAA batteries (not included), making them a versatile and essential tool for cleanliness and pest detection.

Specifications

Additional Features	Rechargeable
Asin	B0BZ772DYL
Battery Description	AAA
Battery Type	Alkaline
Best Sellers Rank	#162,270 in Pet Supplies (See Top 100 in Pet Supplies) #95 in Pet Urine Detectors
Brand Name	ESCO LITE
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (180) 4.6 out of 5 stars
Finish Types	Knurled
Item Shape	Compact
Light Source Special Features	Black light, UV light detection
Light Source Type	UV
Manufacturer	ESCO LITE
Manufacturer Part Number	ESCO-0121
Manufacturer Warranty Description	1 year warranty.
Material Type	Aluminum
Model Number	ESCO-0121
Mounting Type	Handheld
Number Of Batteries	3 AAA batteries required.
Number Of Items	2
Number Of Light Sources	12
Number Of Packs	2
Power Source	Battery Powered
Recommended Uses For Product	Domestic and travel inspection, pest detection, currency and ID verification
Style Name	Compact
Unit Count	2 Count
Water Resistance Level	Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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