What are the dimensions of the vial? Is there a cheaper alternative? 20 dollars seems like a lot for what we're getting.

If you don't need 20 of them, you can get a 6 pack for a lot cheaper: https://www.amazon.com/Aquarium-Pharmaceuticals-API-Replacement-Test/dp/B07G4NGMM8/ref=sr_1_1?keywords=5ml+test+tube&qid=1645582702&sr=8-1 More expensive per tube though.

Can these be used to store Isopropyl Alcohol for on to go first aid kit? How big is the tube and is it fragile or strong enough for extended use?

I have noticed that the caps, while quite appropriate for water parameter test kits, would not be suitable for long-term storage of any liquid. They leak a bit.

What test tube rack would be best for these?

I built my own. If you want a cheap hack, get a block of styrofoam and press the top of an open test tube into it at intervals to get the outer diameter perfect. Then cut out the styrofoam to the best depth. Test tubes fit snugly.

Do you sell just a box of replacement caps?

If you looked for caps already and no results, that means that tubs with caps are sell together. No separate. You might want to contact the API and asked them directly.

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API REPLACEMENT PLASTIC TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box

Product ID: 7253542

🔒snap-tight secure caps

🧪24 precision test tubes

♻️durable reusable plastic

MX$1346

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Description

🧪 Keep your aquarium testing flawless—never miss a beat with API’s trusted replacements!

TRUSTED API QUALITY - Backed by nearly 60 years of aquarium care expertise for reliable results.
SECURE SNAP TIGHT CAPS - Leak-proof design ensures accurate testing every time.
UNIVERSAL COMPATIBILITY - Fits all API aquarium test kits—freshwater, saltwater, reef, and more.
BULK 24 PACK CONVENIENCE - Ample supply to replace lost or damaged tubes without interruption.
DURABLE PLASTIC CONSTRUCTION - Long-lasting, reusable tubes built for consistent performance.

This 24-count box of API replacement plastic test tubes with snap-tight caps is designed for use with any API aquarium test kit, including freshwater, saltwater, reef, and pond kits. Made from durable plastic, these tubes ensure secure, leak-proof testing and are perfect for replacing lost or damaged original tubes. Backed by API’s 60 years of aquarium care expertise, they help maintain a healthy aquatic environment for all your fish.

Specifications

ASIN	B0002AQL5G
ASIN	B0002AQL5G
Best Sellers Rank	#59,712 in Pet Supplies ( See Top 100 in Pet Supplies ) #89 in Aquarium Test Kits
Brand Name	API
Color	No Color
Customer Reviews	4.7 4.7 out of 5 stars (1,322)
Date First Available	June 15, 2004
Date First Available	June 15, 2004
Department	Unisex-Adult
Department	Unisex-Adult
Item Dimensions LxWxH	7.13 x 1.25 x 3.5 inches
Item Package Dimensions L x W x H	7.17 x 3.7 x 1.34 inches
Item Weight	3.17 ounces
Item model number	32
Item model number	32
Manufacturer	Mars Fishcare
Manufacturer	Mars Fishcare
Material	Plastic
Model Name	PLASTIC REPLACEMENT TEST TUBES W/CAPS
Number of Items	1
Product Dimensions	7.13 x 1.25 x 3.5 inches; 3.17 ounces
Size	24 PACK
Style	Replacement Test Tubes
Target Audience Keyword	fish

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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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MX$1346

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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