power 4dAFL's OPM5 and OPM4 Optical Power Meters for accurate fiber optic testing. Featuring Wave ID, rugged desn, and compatibility with various networks. ... -4D (Filtered-InGaAs) for hhFor the perfect blend, pour one packet of 4D Mix Pack powder into 16-24 ounces of cold water, shake well until fully dissolved, and enjoy. This ensures you