Mini Hygrometer for Vial Storage
Round or Square
Vial Size Chart
Vial sizes refer to liquid capacity. Below are the approximate dimensions of each common vial — match your vial to the size this case is built for.
| Vial Size | Approx. Size (Ø × H) | Common Contents |
|---|---|---|
| 1 mL | 11 × 32 mm | Small vials |
| 2 mL | 14 × 35 mm | Standard vials |
| 3 mL | 16 × 35 mm | Standard vials |
| 5 mL | 20 × 38 mm | Larger vials |
| 10 mL | 22 × 50 mm | Bottles & diluents |
| 20 mL | 30 × 57 mm | Multi-dose bottles |
| 30 mL | 36 × 63 mm | Large bottles, bulk |
| 50 mL | 40 × 75 mm | Bulk storage |
| 100 mL | 52 × 95 mm | Bulk storage |
Dimensions are approximate and vary slightly by manufacturer. Ø = diameter, H = height (excluding cap). When in doubt, measure your vial’s widest point and height.
- Hard-shell impact protection
- Fridge & freezer safe
- Keeps vials organized & secure
- TSA friendly & travel ready
- Ships in 24–48 hours
You picked a Blemished item
This version has a minor cosmetic or print defect — a small mark, blemish, or imperfection from the 3D-printing process. It’s offered at a lower price because we can’t sell it as new.
- 100% functional — protects your vials exactly the same.
- Cosmetic flaw only — appearance varies slightly unit to unit.
- Discounted & final sale.
Compact digital hygrometer designed to fit inside your vial case, fridge organizer, or enclosed storage. Provides clear, real-time temperature and humidity tracking for home or travel use.
Key Features
- Digital LCD display auto-updates readings every 10 seconds
- Monitors relative humidity from 10 percent to 99 percent RH
- Toggle between Fahrenheit and Celsius readouts with the press of a switch
- Durable ABS plastic housing built to drop into small storage containers
- Includes installed LR44 button batteries so it is ready to use out of the box
Capacity
- Round: includes 1 digital hygrometer with 2 LR44 button batteries
- Square: includes 1 digital hygrometer with 1 LR44 button battery
Dimensions
- Round: 4.6 cm diameter x 1.5 cm depth (1.81 in dia. x 0.59 in depth), ~3.5 oz
- Square: 48 x 28 x 17 mm (1.89 in x 1.10 in x 0.67 in) L x W x D, ~6.7 oz
Care
- Wipe clean with a dry cloth
- Do not submerge in water
- Not waterproof; keep display away from direct liquid contact
- Replace battery if display fades or readings become erratic
Good to know
- Indicator only; does not regulate or control environmental conditions
- Temperature accuracy is +/- 2 degrees F (+/- 1 degree C) and humidity accuracy is +/- 5 percent RH
- Contains coin or button cell batteries; keep away from children
Shipping
- Free shipping on all orders over $99.99.
- Made to order — ships in 24–48 hours.
- Tracking provided on every order.
Returns
- 30-day money-back guarantee — love it or return it.
- No-questions-asked returns on unused items.
- Contact us and we'll make it right.
Customer Reviews
Real, verified reviews and photos from VialCase customers.
Why VialCase vs. a Generic Box
Built for vials — not a repurposed tackle box.
| Feature | VialCase | Generic Storage Box |
|---|---|---|
| Custom-fit vial slots | ✓ | ✗ |
| Hard-shell impact protection | ✓ | ✗ |
| Fridge & freezer safe | ✓ | ✗ |
| Dedicated diluent-bottle slot | ✓ | ✗ |
| Made in the USA | ✓ | ✗ |
| 30-day money-back guarantee | ✓ | ✗ |
| 1,600+ verified reviews | ✓ | ✗ |
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