Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Phenolphthalein Test PaperPhenolphthalein Test Paper is highly sensitive to Ammonia Vapors, making it effective for identifying leaks in refrigerators or air conditioners. By detecting Ammonia levels in solution as low as 3 5ppm, a pinkish color change on the test strip indicates its presence. It is widely used in educational settings, research laboratories, and industries. The test strip changes to a pinkish color upon detection of Ammonia. Solution must be water based.
Phenolphthalein Test Paper is highly sensitive to Ammonia Vapors, making it effective for identifying leaks in refrigerators or air conditioners. By detecting Ammonia levels in solution as low as 3-5ppm, a pinkish color change on the test strip indicates its presence. It is widely used in educational settings, research laboratories, and industries.
- The test strip changes to a pinkish color upon detection of Ammonia.
- Solution must be water-based.
| Product Code: | SE.LW3837-01 |
| Brand: | Precision Labs |
| Packaging: | vial of 100 strips |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2298 reviews
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Product Reviews
★★★★★ 5
Good product
Color: Black, Size: Pack of 50
I love this product. Actually is the second time that I buy from this company. It is very sturdy and has a good grip and also is beautiful. I recommend it.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Quality frame - turns a puzzle into art
Color: Black, Size: 19.7x27.6, Color: Black, Size: 19.7x27.6
This puzzle frame worked perfectly for my 50cm x 70cm puzzle—it fits exactly and really transforms the finished puzzle into a beautiful display piece. The frame is well constructed and has a clean, finished look that doesn’t come across as cheap plastic. Mounting the puzzle was very easy, and everything sat securely once in place.
It arrived well packaged with no damage, and the protective plastic sheet is a nice touch. It keeps the puzzle safe while being much lighter than glass, which makes hanging and handling easier.
Overall, this is a quality frame that makes your completed puzzle look like real wall art.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Superior construction & reasonable cost!
Color: Black, Size: 8x12
I had one old picture that was this odd size. I didn't want to spend a fortune, and this fit the price. When it came I was so impressed with the quality. Not glass, but I love the ease of construction with swinging tabs that held the back on instead of those cheap flat pegs you can't get back in the holes.. Excellant, superior. I love it! I hope it comes in more normal sizes as well, like 8x10, 11x14, 16x20 even!
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Excellent solution at a great price point!!
Color: Black, Size: 5.5x8.5, Color: Black, Size: 5.5x8.5
Just received, opened package, and this is exactly what was needed. It fits certificates, documents perfectly. Needed the 8.5x5.5 size to fit a certificate and in prior years I had to to modify the document to fit a 5x7 frame (had no idea there was the perfect size available) and it was very low cost and very well made! The black frame has a soft texture which I love, and the Plexiglas material is rigid and not easily broken. It has numerous hanging or standing options.
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Reviewed in the United States on May 30, 2026
★★★★★ 4
Beautiful Non-Glass Frame
Color: Bronze, Size: 12x16
Love this frame!! I'm so in love with the new type of frame backing this one had! I hate those frames that have those tiny thin metal tabs that stick out where you have to bend up/down to remove backing but not this one! It has these really easy to use metal springs that you push down & turn & it easy pops out! Wish frames all came w actual glass! I thought this one had glass but was wrong, it has the thin plexiglass type covering where you remove the clear stickers from front/back. It will work but because I have it used in a bathroom, I will need to get a glass replacement eventually. Love the gold color, it's a really pretty gold, not overly yellow. Overall, I think its a nice frame & such a great value.
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Reviewed in the United States on March 17, 2026
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