Out of Stock Read more Tea Bag Unit $4.50 Out of Stock Read more pH Strips $3.50 Out of Stock Read more Predalure $6.50 Out of Stock Read more Soil Fungi Petri $3.75 Out of Stock Read more Soil Bacteria Petri $3.75 Out of Stock Read more Soil Biodiversity Probes $4.50 Out of Stock Read more Magnifying Glass $5.00 Out of Stock Read more Nitrate Strips $3.75