The exposure of a sanitary napkin industry scandal during the 2025 CCTV 315 Gala has drawn widespread public attention to the safety of women's care products. Reports indicate that some companies profited by recycling defective products and production waste for "secondary sales", even reprocessing moldy materials into finished goods, posing a serious threat to consumer health. This incident reveals significant loopholes in areas such as raw material screening, production process supervision, and the destruction of defective products.

As a manufacturer with years of experience in the sanitary products testing field, we deeply understand that quality and safety are paramount, and detection technology is a crucial line of defense. To safeguard public safety, Yanshuo Instrument is dedicated to leveraging technological power to protect consumer trust.

**Shocking Industry Malpractices**

1.  **Defective Product Renovation Chain:** Low-cost acquisition of sanitary napkin and diaper production waste, sorting "second-grade" products for resale at higher prices, and even pulverizing waste for reuse as raw materials.

2.  **Well-Known Brands Implicated:** Production waste from famous brands entering the black market, leading some live-streaming sales channels to halt operations temporarily to avoid backlash, and rising consumer维权 voices.

3.  **Health Risks Cannot Be Ignored:** Substandard sanitary napkins may lead to health issues like HPV infection and allergies, with mothers and infants becoming a particularly affected group.

Currently, the primary standards governing sanitary napkin products in China are the recommended national standard **GB/T 8939-2018 "Sanitary absorbent pads (panty liners)"** and the mandatory national standard **GB 15979-2024 "Hygienic requirements for disposable sanitary products"**.

So, how does a qualified sanitary napkin pass through rigorous professional laboratory checks before reaching consumers?

Below is an introduction to high-priority test items.

**Test 1: Overall Length Deviation (GB/T 8939-2018)**

The allowable overall length deviation for sanitary napkins/pads is ±4%. The standard details the measurement method: measure the total length of the specimen using a ruler (from the longest point), accurate to 1 mm. Test 6 specimens per specification, sourced from at least two different sales packages, with at least two pieces from each package.

**Test 2: Absorption Speed**

Absorption speed directly affects user experience. GB/T 8939-2018 requires an absorption speed of ≤60 seconds, meaning 5 mL of a standard synthetic test solution must be completely absorbed within 60 seconds. Current testing shows that high-quality sanitary napkins often achieve complete absorption within 10 seconds.

**Test 3: Migratory Fluorescent Substances**

Some consumers use household fluorescent detection pens to check for fluorescent whitening agents, but this method is unscientific. GB/T 8939-2018 requires cutting out suspicious fluorescent areas after initial inspection, extracting them with a solution, soaking pure cotton gauze in the extract, and then testing for "migratory" fluorescent substances under specified ultraviolet wavelengths.

**Test 4: pH Value Test**

If a sanitary napkin's pH value is weakly acidic, it is closer to the human skin environment. An acidic environment inhibits the growth of most pathogenic microorganisms. GB/T 8939-2018 requires a pH range of 4.0-9.0.

**Test 5: Microbiological Testing**

The presence of pathogenic microorganisms (such as Escherichia coli, Staphylococcus aureus) in sanitary napkins can potentially cause gynecological inflammation. GB 15979-2024 stipulates:

*   Total bacterial colony count: ≤200 CFU/g

*   Total fungal colony count: ≤100 CFU/g

*   Coliforms, Pseudomonas aeruginosa, Staphylococcus aureus, and Streptococcus hemolyticus: shall not be detectable.

**Xi'an Yanshuo Instrument: Building a Technological Line of Defense for Safety**

Our company has launched comprehensive testing solutions for products according to relevant standards:

*   Sanitary napkins: **GB/T 8939-2018 "Sanitary absorbent pads (panty liners)"**

*   Diapers: **GB/T 28004.1-2021 "Paper diapers – Part 1: Baby diapers"** and **GB/T 28004.2-2021 "Paper diapers – Part 2: Adult diapers"**

These solutions help enterprises achieve 360-degree quality control from raw materials to finished products.

**Reshaping Industry Confidence with Technology**

Our company will continue research, development, and innovation, driving testing technology towards greater intelligence, digitalization, and traceability. By safeguarding every piece with precision testing, we stand firm in the face of industry crises. We are not just providers of instruments; we are protectors of a healthy ecosystem.

*Note: Some images and information in this section are sourced from the internet.*