Universal pH 0-12 litmus paper strips, 100 pcs roll
- pH range: 0-12 (universal, covers acidic and alkaline)
- Quantity: 100 pcs per roll
- Reaction time: ~1-3 sec (colour stabilises in 30 sec)
- Shelf life: 3 years (from opening)
Where litmus strips are used
In HVAC and heating maintenance, litmus strips are used in several cases: (1) heating system water pH check after filling or service — normal pH: 7.5-9.5 (in some DH networks up to 10); (2) glycol-water mix quality control — glycol degrades acidic over time; (3) cleaning solution neutralisation check after Alfa Laval P-Scale / REMS CleanH or similar procedures — target pH before sewer discharge: 6-8. Usage — dip strip in solution 1-3 sec, compare colour to chart on packaging.
Technical specifications
| Parameter | Value |
|---|---|
| Code | PND50-975-84 |
| Type | Universal indicator litmus paper strips |
| pH range | 0-12 |
| Scale step | Typically 1-2 pH units (supplier-dependent) |
| Quantity | 100 pcs in roll (with plastic dispenser) |
| Strip dimensions (W × L) | Approximately 7 × 45 mm |
| Reaction time | ~1-3 sec (fully stable in 30 sec) |
| Colour chart | On packaging (for post-dip comparison) |
| Shelf life | ~3 years (from opening) |
| Storage | Dry, dark, ambient temp (do not wet before use) |
When to choose these strips
- HVAC service companies — as part of the flushing/cleaning toolset
- Alfa Laval P-Scale / P-Neutra procedures — neutralisation pH check
- Glycol-water mix quality control (annual test)
- Heating system water composition monitoring after fill / service
- Fast, cheap on-site pH pre-assessment
B2B delivery and logistics via Amegata.lt
- 24-hour delivery across Lithuania (from our warehouse in Vilnius)
- Competitive B2B pricing — often below market average
- 30-day payment terms for companies (per contract)
- Free technical consultation on measurement procedure
Frequently asked questions
What is the normal heating system water pH?
In closed heating systems typically pH 7.5-9.5 (slightly alkaline for corrosion protection). DH mains can reach pH 10. If measured pH < 6.5 — significant acidification, detailed analysis needed.
Suitable for glycol mixtures?
Yes. Fresh glycol-water mix pH — around 7.5-8.5. Measured pH < 6.5 → glycol degradation, drain and refill required.
How to store?
Dry, dark, room temperature. Do not place under direct sunlight — indicator fades and accuracy drops. Close packaging immediately after use.
Calibration needed?
No. Litmus strips are single-use with factory-set chart. Calibration is only relevant for digital pH meters.
When to choose a digital pH meter?
When accuracy > ±0.1 pH is required (lab, pharma), or when data logging is needed. For HVAC maintenance, litmus strips suffice.
