How to prepare salt water: a complete guide to scientific proportions and practical scenarios
As a common solution, salt water is widely used in medical, cooking, cleaning and other fields. How to prepare salt water correctly? How do the proportions differ for different uses? This article will combine the hot topics and hot content on the Internet in the past 10 days to provide you with a structured guide to preparing salt water.
1. Basic concepts and uses of salt water
Salt water is a solution formed by dissolving sodium chloride (NaCl) in water. Its concentration and purity directly affect the use effect. The following are common uses of salt water and corresponding concentration requirements:
| Purpose | Recommended concentration | Description |
|---|---|---|
| Mouthwash and disinfection | 0.9%-3% | Relieve sore throat or oral inflammation |
| Wound cleaning | 0.9% (physiological saline) | Consistent with the osmotic pressure of human body fluids |
| cooking seasoning | 1%-5% | Adjust according to dish needs |
| Nasal irrigation | 0.9%-2% | Relieve nasal congestion or allergy symptoms |
2. Scientific preparation method of salt water
The core of preparing brine is to control the ratio of salt to water. The following is the preparation formula for common concentrations (taking 1 liter of water as an example):
| concentration | Amount of salt (g) | Applicable scenarios |
|---|---|---|
| 0.9% (physiological saline) | 9 grams | Medical cleaning, infusion |
| 3% | 30g | Rinse or disinfect |
| 5% | 50g | pickled food |
Things to note:
1. Use pure water or boiled cold water to avoid impurity contamination.
2. Stir until the salt is completely dissolved and filter if necessary.
3. Medical salt water needs to be sterilized (such as boiling for 10 minutes).
3. Answers to recent hot questions
Based on the hot topics on the Internet in the past 10 days, the following high-frequency questions have been sorted out:
Q1: Can salt water relieve pharyngitis?
A: Gargling with 3% salt water can temporarily relieve inflammation, but it needs to be combined with medical treatment.
Q2: Is homemade saline safe?
A: For short-term external use (such as cleaning wounds), you can refer to the 0.9% ratio for preparation, but for long-term medical use, it is recommended to purchase sterilized finished products.
Q3: What is the correct way to wash your nose with salt water?
A: Use 0.9%-2% saline water, the water temperature is close to body temperature, and operate it with the help of a nasal rinse to avoid choking and coughing.
4. Preservation and use taboos of salt water
| Save method | shelf life |
|---|---|
| Sealed at room temperature | 24 hours |
| Refrigerated (4℃) | 3 days |
| Sealed after sterilization | 7 days |
Taboo:
1. Patients with high blood pressure should avoid ingesting high-concentration salt water.
2. Non-sterile saline should not be used for deep wounds or injections.
3. Avoid long-term storage of metal containers to prevent corrosion.
Conclusion
The correct preparation of salt water requires precise control of the proportions according to the intended use and attention to hygienic conditions. The structured data and answers to popular questions provided in this article hope to help you use salt water safely and efficiently. If you have special needs (such as postoperative care), it is recommended to consult a medical professional.
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