Choosing pH strips for soap making is mainly about getting a readable result from a small liquid sample. The options below cover broad pH ranges and vary in strip count, packaging, and test method. Keep in mind that a strip reading is a rough check, not a complete test of whether a bar is ready or suitable to use.
Quick Comparison
| Product | Range | Quantity | Notable feature |
|---|---|---|---|
| GPJYYDS 6-Pack pH Test Papers | 1–14 | 480 strips | Includes droppers and storage case |
| HomEnjoy 2-Pack pH Test Strips | 1–14 | 160 strips | Sealed package; drop-sample method |
| THINKPRICE 3-Pack pH Test Strips | 1–14 | 240 strips | Three-pack supply |
| LabRat Supplies Plastic pH Test Strips | 0–14 | 100 strips | Plastic strips; one-unit chart intervals |
| HOVIRAN Universal pH Test Strips | 0–14 | 125 strips | Compact quantity; bottle-based chart |
Our Picks: Best Ph Test Strips For Soap Making reviews
Best Complete Kit: GPJYYDS 6-Pack pH Test Papers
This six-pack includes 480 paper strips, six small test droppers, and a plastic storage case. Its stated pH range is 1–14, making it a broad-use option for soap samples as well as other liquids.
The included droppers suit a controlled sample method: prepare a small amount of soap solution, then place a drop or two on the test area rather than dipping the paper into a larger container. The product description says results appear within five seconds. That can make repeated checks convenient, though the color chart still requires visual matching.
This is the most fully equipped pick in the group, especially if you expect to test often or want accessories in the package. Its main trade-off is that the full set may be more than you need for occasional soap checks. The broad range is useful, but it does not make the strips a fine-grained measurement tool.
Pros:
- Large supply of 480 strips across six packs
- Includes droppers and a storage case
- Full stated range of pH 1–14
- Designed for drop-on testing rather than dipping
Cons:
- May be more supplies than an occasional soap maker needs
- Color matching is still a visual estimate
Verdict: Choose this kit if you want a large supply plus droppers and storage, and prefer testing a small sample by applying drops to the strip.
Best Small Pack: HomEnjoy 2-Pack pH Test Strips
HomEnjoy supplies 160 strips in two packs, with a stated range of pH 1–14. The package is described as sealed, and the instructions recommend applying a sample to the strip with a dropper or glass rod rather than immersing the paper.
That method can be useful for soap making because it lets you test a small prepared liquid sample without putting a strip directly into a batch or container. The product description says the color change can be read against the included chart within five seconds. As with any color-based strip, lighting and the sample’s own color may make a close match harder to judge.
Compared with the larger GPJYYDS kit, this option has fewer strips and does not list included droppers or a storage case. In return, it offers a more modest supply for makers who do not need hundreds of tests at once.
Pros:
- Full stated pH range of 1–14
- Two-pack format with 160 strips total
- Instructions favor drop-on testing
- Sealed package is specified
Cons:
- Fewer strips than the larger multi-packs
- Droppers and a storage case are not listed as included
Verdict: This is a sensible pick if you want a sealed, mid-size supply and are comfortable preparing a liquid sample for drop-on testing.
Best Three-Pack Supply: THINKPRICE 3-Pack pH Test Strips
THINKPRICE packages 240 filter-paper strips in three packs and states a pH range of 1–14. The instructions call for placing liquid on the strip, then comparing its color with the chart. The product description gives a reading time of about 15 seconds, so it is not the fastest option described here.
The multi-pack format suits frequent testing or a small soap-making workspace that wants extra strips on hand. Its instructions also emphasize not immersing the strip. For soap, that means preparing a sample first and keeping the paper separate from the bar or batch.
This product offers more strips than HomEnjoy but fewer than GPJYYDS. It does not list droppers or a storage case, so you may need to supply a clean way to transfer your sample. The stated wait time and color-chart method are worth considering if you want a quicker, more convenient readout.
Pros:
- 240 strips across three packs
- Full stated range of pH 1–14
- Drop-on method avoids immersing the paper
- Described for soap and other liquid testing
Cons:
- Instructions allow about 15 seconds for comparison
- Droppers and a storage case are not listed
Verdict: Pick this three-pack if you want a substantial strip supply and do not mind providing your own dropper or other clean sampling tool.
Best Plastic Strips: LabRat Supplies Universal pH Test Strips
LabRat Supplies offers 100 plastic pH strips with a stated range of 0–14. The listed chart moves in one-unit intervals, and the instructions describe dipping a strip into a solution before matching the color to the chart on the case.
The plastic strip format and case-based chart may appeal if you prefer a compact product with its color guide close at hand. The product is also described for testing soap and other materials, but the one-unit intervals mean the result is a broad estimate rather than a highly precise reading.
Unlike the paper-strip options that recommend applying drops, this product’s instructions describe dipping. For soap testing, use a small prepared sample and follow the package directions. Store the strips in their original packaging in a cool, dry place away from sunlight, as the product description advises.
Pros:
- Plastic strips with a full stated range of 0–14
- Color chart is on the case
- Described for soap and a range of other samples
- Storage guidance is provided
Cons:
- Only 100 strips are included
- One-unit chart intervals limit reading detail
Verdict: Consider this option if you prefer plastic strips and a case-mounted chart, and a broad whole-unit reading is enough for your checks.
Best Compact Quantity: HOVIRAN Universal pH Test Strips
HOVIRAN provides 125 strips with a stated range of 0–14. The instructions say to dip a strip into a liquid sample for one second, wait for the test pads to change color, and compare the result with the chart on the bottle.
The smaller count can suit a soap maker who wants a dedicated set of strips without committing to a large multi-pack. The product description lists soap among its intended uses. It also advises removing color from a colored water sample before testing, a reminder that sample appearance can affect visual interpretation.
Unlike the paper-strip kits that instruct you to apply a drop, this product describes dipping. Follow its directions and test a small sample rather than using a strip directly on a bar. The package contains fewer strips than the other picks with multi-pack formats, but its instructions are straightforward.
Pros:
- Full stated range of 0–14
- 125 strips for a moderate supply
- Chart is provided on the bottle
- Instructions specify a quick dip-and-compare method
Cons:
- Fewer strips than the larger packs
- Its dipping method differs from the drop-on instructions of several other options
Verdict: Choose HOVIRAN if you want a moderate number of strips and prefer the bottle-chart, dip-and-compare method described in its instructions.
How to Choose pH Test Strips for Soap Making
Choose a range that covers alkaline samples
Soap samples are generally alkaline, so a broad-range strip that includes the upper part of the pH scale is a practical starting point. All five options list broad ranges: three span pH 1–14, while LabRat Supplies and HOVIRAN list pH 0–14. A wide range is useful for general checks, but it does not guarantee a precise reading at a particular value.
Understand the detail in the color chart
Check the chart intervals, not just the stated range. LabRat Supplies specifies one-unit intervals, which gives a broad estimate. The other supplied product details do not state their chart intervals. In every case, compare the strip in good light and treat the color match as an estimate rather than a lab-grade measurement.
Consider how you will prepare and apply the sample
Most of these products advise testing a liquid sample rather than putting a strip on a dry bar. Some instruct you to place drops on the strip; others describe dipping. Follow the specific package directions, and use a clean tool to transfer a small sample. If you are testing solid soap, prepare a liquid sample according to a consistent method so results are easier to compare between batches.
Think about strip count and storage
A larger pack can be useful if you test many batches or want strips for other household tasks. For occasional checks, a smaller count may be easier to use up. Keep strips dry and follow the package storage directions. The LabRat Supplies description specifically recommends keeping its strips in their original packaging in a cool, dry place away from sunlight.
Use pH as one check, not the whole safety test
A strip reading alone does not confirm that a soap recipe was measured correctly, fully processed, or suitable for use. Use a reliable soap-making method, measure ingredients carefully, and follow appropriate handling and curing guidance for your recipe. If a result looks unexpected, repeat the test with a fresh sample and a fresh strip.
FAQs
Can pH test strips be used on a finished bar of soap?
These strips are intended for liquid samples, and several product descriptions say not to test dry material directly. Prepare a small liquid sample from the soap and follow the strip maker’s instructions rather than pressing a strip onto the bar.
Should I dip the strip or put drops on it?
Follow the directions for the specific product. GPJYYDS, HomEnjoy, and THINKPRICE describe applying liquid to the strip, while LabRat Supplies and HOVIRAN describe dipping. Mixing methods can make results harder to compare.
Are universal pH strips precise enough for soap making?
They can provide a quick, broad indication of acidity or alkalinity, but color charts have limits. The LabRat Supplies chart, for example, lists whole-unit intervals. Do not treat a strip reading as a precise lab measurement or as the only check on a batch.
What should I do if the soap sample is cloudy or colored?
Cloudiness or color can make it harder to judge the strip’s color against its chart. Use a small, consistent sample and follow the strip instructions. HOVIRAN’s product description specifically advises removing color from colored water samples before testing.
How many strips do I need?
That depends on how often you test and whether you will use the strips for other tasks. The listed options range from 100 to 480 strips. A smaller pack may be enough for occasional checks, while a multi-pack offers a larger supply.
Does a pH strip reading prove that soap is safe to use?
No. A strip gives a pH estimate; it does not verify every part of the recipe or process. Follow a tested soap-making method, use careful measurements, and consider pH only as one part of your quality checks.
Final Recommendation
For the most complete package, GPJYYDS stands out with 480 strips, droppers, and a storage case. HomEnjoy is a more modest option with 160 strips and drop-on instructions, while LabRat Supplies and HOVIRAN are worth considering if you prefer plastic strips or a dip-and-compare method. Whichever you choose, prepare a consistent liquid sample and use pH strips as a helpful estimate—not as the sole measure of a soap batch’s quality or safety.