# GPA Oyster Powder

> Pure organic calcium carbonate (CaCO3 ≥ 95.2%) milled from Ghanaian coastal oyster shells in Ada-Kasseh for commercial poultry feed, snail farming (heliciculture), and agricultural soil conditioning.

## Quick Facts
- Location: Ada-Kasseh, Greater Accra Region, Ghana
- Standard Packaging: 50 kg heavy-duty woven polypropylene sacks
- Purity: ≥ 95.2% Calcium Carbonate (CaCO3), 38.1%–39.4% elemental calcium
- Moisture: < 1.2% (oven dried at 105°C)
- pH: 8.2–8.6
- Official Phone / WhatsApp: +233 59 895 7051
- Official Email: gpaoystershellspowder@gmail.com
- Website: https://www.gpaoystershells.com

## Particle Grades
- Grade A (Coarse Layer Grit): 1.0 mm – 3.5 mm. Calibrated for commercial layer hens (slow nocturnal gizzard calcium release for eggshell calcification) and snails.
- Grade B (Fine Milled Powder): 100 Mesh (< 150 µm). Uniform mineral meal for compound mash feeds, premixes, broilers, cattle, and gentle soil liming.
- Grade C (Agricultural Liming Meal): 0.5 mm – 1.5 mm. Soil pH correction for acidic tropical agricultural fields.

## Core Pages
- [Home](https://www.gpaoystershells.com/): Company introduction, product overview, value propositions.
- [About Us](https://www.gpaoystershells.com/about): Sourcing history in Ada-Kasseh, circular blue economy model, milestones from 2022 to present.
- [Product & Specifications](https://www.gpaoystershells.com/product): Full laboratory assay specifications, particle grades, 6-step manufacturing process, export logistics.
- [Contact & Quotation](https://www.gpaoystershells.com/contact): Sales contacts, WhatsApp instant chat (+233 59 895 7051), quotation request form, factory directions.