The special brush by Martina Schöner is the right tool for this. It has washable white brush hairs that are just rigid enough to strip dirt well and at the same time flexible enough not to bend the needle carrier. This works equally well in the dry as well as in the needle cleaner wetted state. The rounded brush side is used to swipe from back to front. The beveled brush side is used to clean the diamond laterally from the left and right.
For the best possible visual inspection of the pickup, an illuminated special magnifier is recommended. The model of L'Art du Son is made of solid metal and uses two slightly offset LEDs for illumination without casting shadows. The magnifying glass with 6x magnification is foldable several times, so you can look at the pickup well from all sides and detect impurities. The black anodized surface reduces irritating stray light
Two CR927 (3 V) button cells are pre-installed and can be easily changed by the owner. The magnifying glass comes in a faux leather case.