Visibility Disc acc. to Secchi, dia. 30cm,10m stee Back Catalog number: 443593 Availability: In the manufacturer's stock Price on request - + Recommended 438517-021 Net bag - protective net 300µ for WP2 Price on request A179-500 Aluminium Bottle 500ml Price on request 1640A-1500 100ml Point Sample Chamber with 1.5m handle Price on request