Lithofin MN Protector for Bluestone
Art. 388-21-B
Your bluestone kitchen island keeps showing dark rings from olive oil and coffee. One wipe leaves a shadow in the pores. MN Protector stops the stains before they form, sealing every capillary in one easy coat.
What MN Protector Does
MN Protector is a neutral impregnator for medium-porous natural stone. Its pH-7, solvent-carried fluoropolymer penetrates up to 3 mm, lining the pores so oil molecules ≥1 µm and water droplets bead instead of soaking in. One 500 ml bottle guards 10 m² for 6-12 months, resisting red wine, grease, and coffee at 20 °C after 24 h cure.
When to Use
- Bluestone kitchen countertops - undiluted, 200 ml/m² (/pages/problem-stain-protection)
- Bluestone dining tables in restaurants - undiluted, 180 ml/m² for faster turnover
- Outdoor bluestone benches - undiluted, 220 ml/m² after 48 h dry weather
- Honed slate bathroom shelves - undiluted, 200 ml/m² (/pages/stone-slate)
- Flamed granite BBQ tops - undiluted, 200 ml/m² (/pages/stone-granite)
How to Apply
- Damp-dust the surface, then let it dry until moisture meter reads ≤0.5 % (about 24 h).
- Pour MN Protector into a paint tray; load a lint-free cloth and wipe evenly, keeping a wet film for 2 min. PT5M
- After 10 min, buff off excess with a white pad to avoid streaks. PT5M
- Wait 24 h before use; avoid water contact during this period. PT5M
Coverage: 10 m² per 500 ml on honed bluestone, 8 m² on rough textures. Second coat not required. Full chemical resistance after 24 h at 20 °C.
Surface Compatibility
Excellent on bluestone because the neutral carrier will not etch its acid-sensitive calcite. Good on dense granite, basalt, and slate; the formula’s small polymer size can still enter their low-porosity structure. Do not use on polished surfaces where penetration is impossible.
Choosing the Right Product
For deep, permanent stain block on any finish, use MN Stain-Stop. For daily cleaning that preserves MN Protector’s hydrophobic layer, mop with MN Wash & Clean.
Pro Tips
- Warm the stone to 18-22 °C; absorption rises 15 % compared with a cold slab.
- Mask stainless steel taps; solvents can dull brushed finishes within 30 s.
- Test water beading after cure; if droplets flatten, apply a maintenance coat at 150 ml/m².
Product Details
Application
Compatibility & Safety
| Surface | Rating | Notes |
|---|---|---|
| Marble | Caution | Test in an inconspicuous area first. |
| Granite | Good | Effective on dense granite surfaces. |
| Limestone | Caution | May alter the appearance; test first. |
| Sandstone | Caution | Test for compatibility due to porosity. |
| Slate | Good | Safe for most slate finishes. |
| Bluestone | Excellent | Specifically designed for Bluestone. |
| Basalt | Good | Effective on dense basalt surfaces. |
| Porcelain | Not-recommended | Not suitable for porcelain surfaces. |
| Ceramic | Not-recommended | Not suitable for ceramic surfaces. |
| Glass mosaic | Not-recommended | Not suitable for glass-mosaic surfaces. |
| Concrete | Caution | Test in an inconspicuous area first. |
| Quartz composite | Not-recommended | Not suitable for quartz-composite surfaces. |
| Terrazzo | Caution | Test for compatibility due to varying finishes. |
| Terracotta | Caution | Test for compatibility due to porosity. |
| Cotto | Caution | Test for compatibility due to varying finishes. |
| Clinker | Caution | Test for compatibility due to varying finishes. |
Dosage Calculator
Apply evenly for optimal protection
Frequently asked questions
Will MN Protector change the colour of bluestone?
No. The 0 % pigment formula leaves colour ΔE <1.0 in the CIELAB test after cure.
How long must MN Protector cure on a countertop before food contact?
Allow 24 h at 20 °C and 50 % RH. Solvents evaporate below 0.5 % mass, meeting food-safe guidelines.
Can I apply MN Protector on polished granite?
No. Polishing closes the pores; use MN Stain-Stop PLUS on those surfaces instead.
How often should MN Protector be renewed in a busy restaurant?
Plan a maintenance coat every 6 months; high traffic abrades about 30 % of the polymer in that period.
Does MN Protector resist red wine on slate bar tops?
Yes. Contact angle stays above 95° for red wine even after 30 min exposure at 20 °C.
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